Group based scheduled and autonomous uplink coexistence

ABSTRACT

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a base station, a group identifier of the UE. The UE may receive, from the base station, an indication of one or more group identifiers associated with scheduled communications with the base station during a time period. The UE may contend, based at least in part on the group identifier of the UE and the one or more group identifiers received from the base station, for access to a set of autonomous uplink (AUL) resources during the time period. The UE may perform, based at least in part on the contending, an AUL transmission to the base station using the set of autonomous uplink resources.

CROSS REFERENCE

The present Application for Patent claims the benefit of IndiaProvisional Patent Application No. 201841006008 by YERRAMALLI, et al.,entitled “GROUP BASED SCHEDULED AND AUTONOMOUS UPLINK COEXISTENCE,”filed Feb. 16, 2018, assigned to the assignee hereof, and expresslyincorporated by reference herein in its entirety.

BACKGROUND

The following relates generally to wireless communications, and morespecifically to group based scheduled and autonomous uplink coexistence.

Wireless communications systems are widely deployed to provide varioustypes of communication content such as voice, video, packet data,messaging, broadcast, and so on. These systems may be capable ofsupporting communication with multiple users by sharing the availablesystem resources (e.g., time, frequency, and power). Examples of suchmultiple-access systems include fourth generation (4G) systems such asLong Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, orLTE-A Pro systems, and fifth generation (5G) systems which may bereferred to as New Radio (NR) systems. These systems may employtechnologies such as code division multiple access (CDMA), time divisionmultiple access (TDMA), frequency division multiple access (FDMA),orthogonal frequency division multiple access (OFDMA), or discreteFourier transform-spread-OFDM (DFT-S-OFDM). A wireless multiple-accesscommunications system may include a number of base stations or networkaccess nodes, each simultaneously supporting communication for multiplecommunication devices, which may be otherwise known as user equipment(UE).

Wireless communications systems may operate in millimeter wave (mmW)frequency ranges, e.g., 28 GHz, 40 GHz, 60 GHz, etc. Wirelesscommunications at these frequencies may be associated with increasedsignal attenuation (e.g., path loss), which may be influenced by variousfactors, such as temperature, barometric pressure, diffraction, etc. Asa result, signal processing techniques, such as beamforming, may be usedto coherently combine energy and overcome the path losses at thesefrequencies. Due to the increased amount of path loss in mmWcommunication systems, transmissions from the base station and/or the UEmay be beamformed. Moreover, a receiving device may use beamformingtechniques to configure antenna(s) and/or antenna array(s) such thattransmissions are received in a directional manner.

In some wireless communications systems, wireless devices may beoperable to support autonomous uplink (AUL) transmissions and/orscheduled uplink (SUL) transmissions. The AUL/SUL transmissions may beperformed using fixed or static resources that overlap, at least in someinstances and to some degree. In some examples, the AUL/SULtransmissions may be operable in a wireless communications system thatoperates on a shared or unlicensed radio frequency spectrum band. Suchoperations may include the devices contending for a channel using aclear channel assessment (CCA) procedure or a listen-before-talk (LBT)procedure, prior to performing the transmissions.

In the scenario where the AUL transmission resources overlap with SULtransmission resources, the AUL device may attempt to monitor for SULtransmissions, e.g., during an LBT procedure, and, if detected, deferthe AUL transmission. However, in some instances the AUL device may beunable to detect the SUL transmission, but be located close enough tothe SUL device that AUL transmissions would interfere with and/or beinterfered by the SUL transmissions. Possible solutions to avoid thisinclude avoiding overlapping AUL/SUL resources, which often results inwasted resources and/or reduced AUL/SUL capabilities.

SUMMARY

The described techniques relate to improved methods, systems, devices,or apparatuses that support group based scheduled and autonomous uplinkcoexistence. Generally, the described techniques provide a mechanismthat support coexistence between autonomous uplink (AUL) transmissionsand scheduled uplink (SUL) transmissions. Broadly, the describedtechniques provide for a base station to group devices into one or moregroups to minimize interference caused by AUL/SUL transmissions onoverlapping (or partially overlapping) resources. In some aspects, thebase station may receive an indication from one or more UEs of anyneighboring UEs that the UE is within communication range of. The basestation may create and/or update groups of UEs based on the indications.The base station may transmit to one or more of the UEs an indication ofwhich group(s) that the UEs are in, e.g., a group identifier (ID) forthe UE. The base station may then schedule communications during a timeperiod, e.g., for a particular slot, and then transmit an indication ofthe group identifier(s) that are scheduled for communications duringthat slot. For example, the base station may schedule SUL configured UEsfor communications during the slot in which AUL configured UEs withinthe same group are communicating. This may ensure that the SULtransmissions can be detected by the AUL configured UEs.

The AUL configured UEs may receive the group identifier and theindication of which group identifiers are scheduled for communicationsduring the slot. Accordingly, the AUL configured UEs may contend foraccess for AUL resources during the slot. If successful, they mayperform AUL transmissions using the AUL resources. However, if SULconfigured UEs are communicating during the slot, the AUL configured UEsmay detect the SUL transmissions and perform a backoff to wait for thenext available transmission opportunity. AUL configured UEs that are notwithin a group included in the indication of which group identifiers arescheduled for communications during the slot may avoid contending forthe channel during the slot in order to reduce potential interference.Thus, the base station can receive AUL and/or SUL transmissions from UEswithin a group(s) during the slot.

In some aspects, such as in a millimeter wave (mmW) wirelesscommunication system, the base station may avoid AUL/SUL transmissioninterference by providing a reservation signal to AUL configured UEs.For example, the base station may use a wide beam with to transmit thereservation signal indicating that downlink communications are beingperformed with one or more UEs. AUL configured UEs within the wide beamwidth may use this reservation signal as an indication to avoid AULtransmissions during that period. Accordingly, the base station mayperform the downlink transmissions to the one or more UEs.

A method of wireless communication at a UE is described. The method mayinclude receiving, from a base station, a group identifier of the UE,receiving, from the base station, an indication of one or more groupidentifiers associated with scheduled communications with the basestation during a time period, contending, based at least in part on thegroup identifier of the UE and the one or more group identifiersreceived from the base station, for access to a set of AUL resourcesduring the time period, and performing, based at least in part on thecontending, an AUL transmission to the base station using the set ofautonomous uplink resources.

Another apparatus for wireless communication at a UE is described. Theapparatus may include a processor, memory in electronic communicationwith the processor, and instructions stored in the memory. Theinstructions may be operable to cause the processor to receive, from abase station, a group identifier of the UE, receive, from the basestation, an indication of one or more group identifiers associated withscheduled communications with the base station during a time period,contend, based at least in part on the group identifier of the UE andthe one or more group identifiers received from the base station, foraccess to a set of AUL resources during the time period, and perform,based at least in part on the contending, an AUL transmission to thebase station using the set of autonomous uplink resources.

Some examples of the method and apparatus described above may furtherinclude processes, features, means, or instructions for performing oneor more instances of a UE-to-UE measurement procedure. Some examples ofthe method and apparatus described above may further include processes,features, means, or instructions for transmitting a feedback message tothe base station based at least in part on the UE-to-UE measurementprocedure, where the group identifier of the UE may be based at least inpart on the feedback message.

Some examples of the method and apparatus described above may furtherinclude processes, features, means, or instructions for determining,during the UE-to-UE measurement procedure, that one or more neighboringUEs may be associated with receive power levels above a threshold value.Some examples of the method and apparatus described above may furtherinclude processes, features, means, or instructions for configuring thefeedback message to indicate an identifier for the one or moreneighboring UEs.

Some examples of the method and apparatus described above may furtherinclude processes, features, means, or instructions for repeating theUE-to-UE measurement procedure and transmitting the feedback messagebased at least in part on: a periodic schedule, or an aperiodicschedule, or a change in receive power levels for a neighboring UE abovea threshold value, or a mobility state of the UE, or a combinationthereof.

In some examples of the method and apparatus described above, theUE-to-UE measurement procedure may include a new radio (NR) cross-linkinterference (CLI) procedure.

In some examples of the method and apparatus described above, a commondownlink control indicator (DCI), or a medium access control (MAC)control element (CE), or a radio resource control (RRC) message, or acombination thereof.

In some examples of the method and apparatus described above, theindication of the one or more group identifiers may be received in acommon downlink control indicator (DCI).

Some examples of the method and apparatus described above may furtherinclude processes, features, means, or instructions for receiving asecond group identifier that may be associated with a secondcommunication type, where the group identifier may be associated with afirst communication type.

A method of wireless communication at a base station is described. Themethod may include transmitting, to a UE, a group identifier of the UE,transmitting an indication of one or more group identifiers associatedwith scheduled communications with the base station during a timeperiod, where the one or more group identifiers includes the groupidentifier of the UE, and receiving an AUL transmission from the UE overAUL resources during the time period based at least in part on theindication.

Another apparatus for wireless communication at a base station isdescribed. The apparatus may include a processor, memory in electroniccommunication with the processor, and instructions stored in the memory.The instructions may be operable to cause the processor to transmit, toa UE, a group identifier of the UE, transmit an indication of one ormore group identifiers associated with scheduled communications with thebase station during a time period, where the one or more groupidentifiers includes the group identifier of the UE, and receive an AULtransmission from the UE over AUL resources during the time period basedat least in part on the indication.

Some examples of the method and apparatus described above may furtherinclude processes, features, means, or instructions for receiving fromeach UE of a plurality of UEs, an indication of neighboring UEs. Someexamples of the method and apparatus described above may further includeprocesses, features, means, or instructions for grouping the pluralityof UEs into the one or more groups of UEs based at least in part on theneighboring UEs. Some examples of the method and apparatus describedabove may further include processes, features, means, or instructionsfor scheduling communications for each of the one or more groups of UEsaccording to the grouping.

In some examples of the method and apparatus described above, theindication of the neighboring UEs may be received in a feedback messagethat may be based at least in part on UE-to-UE measurement proceduresperformed between the plurality of UEs. In some examples of the methodand apparatus described above, the grouping may be based at least inpart on the feedback messages.

Some examples of the method and apparatus described above may furtherinclude processes, features, means, or instructions for determining,based at least in part on the feedback messages, that one or moreneighboring UEs to a UE may be associated with receive power levelsabove a threshold value. Some examples of the method and apparatusdescribed above may further include processes, features, means, orinstructions for where grouping the plurality of UEs into one or moregroups of UEs may include grouping the UE associated with the feedbackmessage and the one or more neighboring UEs into a group of UEs.

Some examples of the method and apparatus described above may furtherinclude processes, features, means, or instructions for repeating thereceiving of the feedback messages and grouping the plurality of UEsbased at least in part on: a periodic schedule, or an aperiodicschedule, or a change in receive power levels between neighboring UEsabove a threshold value, or a mobility state of one or more UEs in theplurality of UEs, or a combination thereof.

In some examples of the method and apparatus described above, a commonDCI, or a MAC CE, or a RRC message, or a combination thereof.

A method of wireless communication at a base station is described. Themethod may include determining that a downlink communication to a UE isto be performed using a first transmit beam in a mmW wirelesscommunication system, transmitting, using a second transmit beam thathas a wider beam width than the first transmit beam, a reservationmessage providing an indication of the downlink communication, where theindication is conveyed in a common DCI, and performing the downlinkcommunication to the UE using the first transmit beam.

Another apparatus for wireless communication at a base station isdescribed. The apparatus may include a processor, memory in electroniccommunication with the processor, and instructions stored in the memory.The instructions may be operable to cause the processor to determinethat a downlink communication to a UE is to be performed using a firsttransmit beam in a mmW wireless communication system, transmit, using asecond transmit beam that has a wider beam width than the first transmitbeam, a reservation message providing an indication of the downlinkcommunication, where the indication is conveyed in a common DCI, andperform the downlink communication to the UE using the first transmitbeam.

Some examples of the method and apparatus described above may furtherinclude processes, features, means, or instructions for identifying oneor more neighboring UEs of the UE that may be configured for AULcommunications. Some examples of the method and apparatus describedabove may further include processes, features, means, or instructionsfor quasi co-locating the common DCI with a DCI that the one or moreneighboring UEs may be configured to monitor for the AUL communications.

In some examples of the method and apparatus described above, the secondtransmit beam may include a P1 transmit beam or a P2 transmit beam.

In some examples of the method and apparatus described above, the firsttransmit beam may include a P3 transmit beam.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates an example of a system for wireless communicationthat supports group based scheduled and autonomous uplink coexistence inaccordance with aspects of the present disclosure.

FIG. 2 illustrates an example of a wireless communications system thatsupports group based scheduled and autonomous uplink coexistence inaccordance with aspects of the present disclosure.

FIG. 3 illustrates an example of a flowchart that supports group basedscheduled and autonomous uplink coexistence in accordance with aspectsof the present disclosure.

FIG. 4 illustrates an example of a flowchart that supports group basedscheduled and autonomous uplink coexistence in accordance with aspectsof the present disclosure.

FIG. 5 illustrates an example of a process that supports group basedscheduled and autonomous uplink coexistence in accordance with aspectsof the present disclosure.

FIG. 6 illustrates an example of a wireless communications system thatsupports group based scheduled and autonomous uplink coexistence inaccordance with aspects of the present disclosure.

FIG. 7 illustrates an example of a process that supports group basedscheduled and autonomous uplink coexistence in accordance with aspectsof the present disclosure.

FIGS. 8 through 10 show block diagrams of a device that supports groupbased scheduled and autonomous uplink coexistence in accordance withaspects of the present disclosure.

FIG. 11 illustrates a block diagram of a system including a UE thatsupports group based scheduled and autonomous uplink coexistence inaccordance with aspects of the present disclosure.

FIGS. 12 through 14 show block diagrams of a device that supports groupbased scheduled and autonomous uplink coexistence in accordance withaspects of the present disclosure.

FIG. 15 illustrates a block diagram of a system including a base stationthat supports group based scheduled and autonomous uplink coexistence inaccordance with aspects of the present disclosure.

FIGS. 16 through 18 illustrate methods for group based scheduled andautonomous uplink coexistence in accordance with aspects of the presentdisclosure.

DETAILED DESCRIPTION

Some wireless communications systems may operate in millimeter wave(mmW) frequency ranges (e.g., 28 GHz, 40 GHz, 60 GHz, etc.). In somecases, wireless communication at these frequencies may be associatedwith increased signal attenuation (e.g., path loss), which may beinfluenced by various factors, such as temperature, barometric pressure,diffraction, etc. As a result, signal processing techniques such asbeamforming (i.e., directional transmission) may be used to coherentlycombine signal energy and overcome the path loss in specific beamdirections. In some cases, a device may select an active beam forcommunicating with a network by selecting the strongest beam from anumber of candidate beams.

Some wireless communications systems may be configured with overlappingresources, at least to some degree, for autonomous uplink (AUL)transmissions and scheduled uplink (SUL) transmissions. When an AULresource overlaps with an SUL resource, there is a potential the AULtransmission can start after the beginning of the SUL transmission. Forexample, if the AUL configured user equipment (UE) is not able to detectthe SUL transmission, then its AUL transmission may cause interferencewith the SUL configured UE. However, if the AUL configured UE is closeto the SUL configured UE, the listen-before-talk (LBT) procedure of theAUL configured UE would fail and the interference can be avoided. Toovercome the potential for such interference, conventional wirelesscommunications systems may simply avoid scheduling SUL transmissionsusing resources that overlap with AUL resources, and/or vice versa.However, these techniques may result in resource waste (such as when theLBT procedure for an SUL configured UE fails) and/or reduced AUL/SULtransmission opportunities.

Aspects of the disclosure are initially described in the context of awireless communications system. Aspects of the present disclosureprovide for implementation of a more efficient and comprehensivetechnique for coexistence between AUL configured UEs and SUL configuredUEs. Generally, the described techniques provide for a base station todivide UEs within a cell into multiple groups, with each group beingassigned a unique group identifier. The base station transmits areservation signal indicating the set of all groups of UEs that arescheduled for communications in a slot or in a group of slots. Only theUEs in the indicated groups, which are configured for AUL transmissions,are permitted to contend for the channel during the scheduled slot(s).Thus, the base station may transmit an indication to each UE of one ormore group identifiers that the UE is associated with. The base stationmay then transmit an indication of one or more group identifiers thatare associated with scheduled communications during the time period(such as a slot or a group of slots). AUL configured UEs that belong toa group included in the one or more group identifiers associated withthe scheduled communications may then contend for the channel and, ifsuccessful, perform AUL transmissions during the time period.

In a mmW network, the base station may avoid interference caused by AULconfigured UEs by transmitting an indication that scheduledcommunications are to be performed, such as downlink transmissions. Forexample, the base station may determine that the scheduledcommunications are to be performed and transmit a reservation messagethat provides an indication of the scheduled communications. In someexamples, the reservation message may be transmitted using a beam havinga wider beam width (e.g., P1 or P2 beam) than a beam that will be usedduring the scheduled communications (e.g., P3 beam). Accordingly, AULconfigured UEs that receive the reservation message may know not tocontend for the medium during the scheduled communication period.

Aspects of the disclosure are further illustrated by and described withreference to apparatus diagrams, system diagrams, and flowcharts thatrelate to group based scheduled and autonomous uplink coexistence.

FIG. 1 illustrates an example of a wireless communications system 100that supports group based scheduled and autonomous uplink coexistence inaccordance with aspects of the present disclosure. The wirelesscommunications system 100 includes base stations 105, UEs 115, and acore network 130. In some examples, the wireless communications system100 may be a Long Term Evolution (LTE) network, an LTE-Advanced (LTE-A)network, an LTE-A Pro network, or a New Radio (NR) network. In somecases, wireless communications system 100 may support enhanced broadbandcommunications, ultra-reliable (e.g., mission critical) communications,low latency communications, or communications with low-cost andlow-complexity devices.

Base stations 105 may wirelessly communicate with UEs 115 via one ormore base station antennas. Base stations 105 described herein mayinclude or may be referred to by those skilled in the art as a basetransceiver station, a radio base station, an access point, a radiotransceiver, a NodeB, an eNodeB (eNB), a next-generation Node B orgiga-nodeB (either of which may be referred to as a gNB), a Home NodeB,a Home eNodeB, or some other suitable terminology. Wirelesscommunications system 100 may include base stations 105 of differenttypes (e.g., macro or small cell base stations). The UEs 115 describedherein may be able to communicate with various types of base stations105 and network equipment including macro eNBs, small cell eNBs, gNBs,relay base stations, and the like.

Each base station 105 may be associated with a particular geographiccoverage area 110 in which communications with various UEs 115 issupported. Each base station 105 may provide communication coverage fora respective geographic coverage area 110 via communication links 125,and communication links 125 between a base station 105 and a UE 115 mayutilize one or more carriers. Communication links 125 shown in wirelesscommunications system 100 may include uplink transmissions from a UE 115to a base station 105, or downlink transmissions from a base station 105to a UE 115. Downlink transmissions may also be called forward linktransmissions while uplink transmissions may also be called reverse linktransmissions.

The geographic coverage area 110 for a base station 105 may be dividedinto sectors making up only a portion of the geographic coverage area110, and each sector may be associated with a cell. For example, eachbase station 105 may provide communication coverage for a macro cell, asmall cell, a hot spot, or other types of cells, or various combinationsthereof. In some examples, a base station 105 may be movable andtherefore provide communication coverage for a moving geographiccoverage area 110. In some examples, different geographic coverage areas110 associated with different technologies may overlap, and overlappinggeographic coverage areas 110 associated with different technologies maybe supported by the same base station 105 or by different base stations105. The wireless communications system 100 may include, for example, aheterogeneous LTE/LTE-A/LTE-A Pro or NR network in which different typesof base stations 105 provide coverage for various geographic coverageareas 110.

The term “cell” refers to a logical communication entity used forcommunication with a base station 105 (e.g., over a carrier), and may beassociated with an identifier for distinguishing neighboring cells(e.g., a physical cell identifier (PCID), a virtual cell identifier(VCID)) operating via the same or a different carrier. In some examples,a carrier may support multiple cells, and different cells may beconfigured according to different protocol types (e.g., machine-typecommunication (MTC), narrowband Internet-of-Things (NB-IoT), enhancedmobile broadband (eMBB), or others) that may provide access fordifferent types of devices. In some cases, the term “cell” may refer toa portion of a geographic coverage area 110 (e.g., a sector) over whichthe logical entity operates.

UEs 115 may be dispersed throughout the wireless communications system100, and each UE 115 may be stationary or mobile. A UE 115 may also bereferred to as a mobile device, a wireless device, a remote device, ahandheld device, or a subscriber device, or some other suitableterminology, where the “device” may also be referred to as a unit, astation, a terminal, or a client. A UE 115 may also be a personalelectronic device such as a cellular phone, a personal digital assistant(PDA), a tablet computer, a laptop computer, or a personal computer. Insome examples, a UE 115 may also refer to a wireless local loop (WLL)station, an Internet of Things (IoT) device, an Internet of Everything(IoE) device, or an MTC device, or the like, which may be implemented invarious articles such as appliances, vehicles, meters, or the like.

Some UEs 115, such as MTC or IoT devices, may be low cost or lowcomplexity devices, and may provide for automated communication betweenmachines (e.g., via Machine-to-Machine (M2M) communication). M2Mcommunication or MTC may refer to data communication technologies thatallow devices to communicate with one another or a base station 105without human intervention. In some examples, M2M communication or MTCmay include communications from devices that integrate sensors or metersto measure or capture information and relay that information to acentral server or application program that can make use of theinformation or present the information to humans interacting with theprogram or application. Some UEs 115 may be designed to collectinformation or enable automated behavior of machines. Examples ofapplications for MTC devices include smart metering, inventorymonitoring, water level monitoring, equipment monitoring, healthcaremonitoring, wildlife monitoring, weather and geological eventmonitoring, fleet management and tracking, remote security sensing,physical access control, and transaction-based business charging.

Some UEs 115 may be configured to employ operating modes that reducepower consumption, such as half-duplex communications (e.g., a mode thatsupports one-way communication via transmission or reception, but nottransmission and reception simultaneously). In some examples half-duplexcommunications may be performed at a reduced peak rate. Other powerconservation techniques for UEs 115 include entering a power saving“deep sleep” mode when not engaging in active communications, oroperating over a limited bandwidth (e.g., according to narrowbandcommunications). In some cases, UEs 115 may be designed to supportcritical functions (e.g., mission critical functions), and a wirelesscommunications system 100 may be configured to provide ultra-reliablecommunications for these functions.

In some cases, a UE 115 may also be able to communicate directly withother UEs 115 (e.g., using a peer-to-peer (P2P) or device-to-device(D2D) protocol). One or more of a group of UEs 115 utilizing D2Dcommunications may be within the geographic coverage area 110 of a basestation 105. Other UEs 115 in such a group may be outside the geographiccoverage area 110 of a base station 105, or be otherwise unable toreceive transmissions from a base station 105. In some cases, groups ofUEs 115 communicating via D2D communications may utilize a one-to-many(1:M) system in which each UE 115 transmits to every other UE 115 in thegroup. In some cases, a base station 105 facilitates the scheduling ofresources for D2D communications. In other cases, D2D communications arecarried out between UEs 115 without the involvement of a base station105.

Base stations 105 may communicate with the core network 130 and with oneanother. For example, base stations 105 may interface with the corenetwork 130 through backhaul links 132 (e.g., via an Si or otherinterface). Base stations 105 may communicate with one another overbackhaul links 134 (e.g., via an X2 or other interface) either directly(e.g., directly between base stations 105) or indirectly (e.g., via corenetwork 130).

The core network 130 may provide user authentication, accessauthorization, tracking, Internet Protocol (IP) connectivity, and otheraccess, routing, or mobility functions. The core network 130 may be anevolved packet core (EPC), which may include at least one mobilitymanagement entity (MME), at least one serving gateway (S-GW), and atleast one Packet Data Network (PDN) gateway (P-GW). The MME may managenon-access stratum (e.g., control plane) functions such as mobility,authentication, and bearer management for UEs 115 served by basestations 105 associated with the EPC. User IP packets may be transferredthrough the S-GW, which itself may be connected to the P-GW. The P-GWmay provide IP address allocation as well as other functions. The P-GWmay be connected to the network operators IP services. The operators IPservices may include access to the Internet, Intranet(s), an IPMultimedia Subsystem (IMS), or a Packet-Switched (PS) Streaming Service.

At least some of the network devices, such as a base station 105, mayinclude subcomponents such as an access network entity, which may be anexample of an access node controller (ANC). Each access network entitymay communicate with UEs 115 through a number of other access networktransmission entities, which may be referred to as a radio head, a smartradio head, or a transmission/reception point (TRP). In someconfigurations, various functions of each access network entity or basestation 105 may be distributed across various network devices (e.g.,radio heads and access network controllers) or consolidated into asingle network device (e.g., a base station 105).

Wireless communications system 100 may operate using one or morefrequency bands, typically in the range of 300 MHz to 300 GHz.Generally, the region from 300 MHz to 3 GHz is known as the ultra-highfrequency (UHF) region or decimeter band, since the wavelengths rangefrom approximately one decimeter to one meter in length. UHF waves maybe blocked or redirected by buildings and environmental features.However, the waves may penetrate structures sufficiently for a macrocell to provide service to UEs 115 located indoors. Transmission of UHFwaves may be associated with smaller antennas and shorter range (e.g.,less than 100 km) compared to transmission using the smaller frequenciesand longer waves of the high frequency (HF) or very high frequency (VHF)portion of the spectrum below 300 MHz.

Wireless communications system 100 may also operate in a super highfrequency (SHF) region using frequency bands from 3 GHz to 30 GHz, alsoknown as the centimeter band. The SHF region includes bands such as the5 GHz industrial, scientific, and medical (ISM) bands, which may be usedopportunistically by devices that can tolerate interference from otherusers.

Wireless communications system 100 may also operate in an extremely highfrequency (EHF) region of the spectrum (e.g., from 30 GHz to 300 GHz),also known as the millimeter band. In some examples, wirelesscommunications system 100 may support millimeter wave (mmW)communications between UEs 115 and base stations 105, and EHF antennasof the respective devices may be even smaller and more closely spacedthan UHF antennas. In some cases, this may facilitate use of antennaarrays within a UE 115. However, the propagation of EHF transmissionsmay be subject to even greater atmospheric attenuation and shorter rangethan SHF or UHF transmissions. Techniques disclosed herein may beemployed across transmissions that use one or more different frequencyregions, and designated use of bands across these frequency regions maydiffer by country or regulating body.

In some cases, wireless communications system 100 may utilize bothlicensed and unlicensed radio frequency spectrum bands. For example,wireless communications system 100 may employ License Assisted Access(LAA), LTE-Unlicensed (LTE-U) radio access technology, or NR technologyin an unlicensed band such as the 5 GHz ISM band. When operating inunlicensed radio frequency spectrum bands, wireless devices such as basestations 105 and UEs 115 may employ listen-before-talk (LBT) proceduresto ensure a frequency channel is clear before transmitting data. In somecases, operations in unlicensed bands may be based on a CA configurationin conjunction with CCs operating in a licensed band (e.g., LAA).Operations in unlicensed spectrum may include downlink transmissions,uplink transmissions, peer-to-peer transmissions, or a combination ofthese. Duplexing in unlicensed spectrum may be based on frequencydivision duplexing (FDD), time division duplexing (TDD), or acombination of both.

In some examples, base station 105 or UE 115 may be equipped withmultiple antennas, which may be used to employ techniques such astransmit diversity, receive diversity, multiple-input multiple-output(MIMO) communications, or beamforming. For example, wirelesscommunications system 100 may use a transmission scheme between atransmitting device (e.g., a base station 105) and a receiving device(e.g., a UE 115), where the transmitting device is equipped withmultiple antennas and the receiving devices are equipped with one ormore antennas. MIMO communications may employ multipath signalpropagation to increase the spectral efficiency by transmitting orreceiving multiple signals via different spatial layers, which may bereferred to as spatial multiplexing. The multiple signals may, forexample, be transmitted by the transmitting device via differentantennas or different combinations of antennas. Likewise, the multiplesignals may be received by the receiving device via different antennasor different combinations of antennas. Each of the multiple signals maybe referred to as a separate spatial stream, and may carry bitsassociated with the same data stream (e.g., the same codeword) ordifferent data streams. Different spatial layers may be associated withdifferent antenna ports used for channel measurement and reporting. MIMOtechniques include single-user MIMO (SU-MIMO) where multiple spatiallayers are transmitted to the same receiving device, and multiple-userMIMO (MU-MIMO) where multiple spatial layers are transmitted to multipledevices.

Beamforming, which may also be referred to as spatial filtering,directional transmission, or directional reception, is a signalprocessing technique that may be used at a transmitting device or areceiving device (e.g., a base station 105 or a UE 115) to shape orsteer an antenna beam (e.g., a transmit beam or receive beam) along aspatial path between the transmitting device and the receiving device.Beamforming may be achieved by combining the signals communicated viaantenna elements of an antenna array such that signals propagating atparticular orientations with respect to an antenna array experienceconstructive interference while others experience destructiveinterference. The adjustment of signals communicated via the antennaelements may include a transmitting device or a receiving deviceapplying certain amplitude and phase offsets to signals carried via eachof the antenna elements associated with the device. The adjustmentsassociated with each of the antenna elements may be defined by abeamforming weight set associated with a particular orientation (e.g.,with respect to the antenna array of the transmitting device orreceiving device, or with respect to some other orientation).

In one example, a base station 105 may use multiple antennas or antennaarrays to conduct beamforming operations for directional communicationswith a UE 115. For instance, some signals (e.g. synchronization signals,reference signals, beam selection signals, or other control signals) maybe transmitted by a base station 105 multiple times in differentdirections, which may include a signal being transmitted according todifferent beamforming weight sets associated with different directionsof transmission. Transmissions in different beam directions may be usedto identify (e.g., by the base station 105 or a receiving device, suchas a UE 115) a beam direction for subsequent transmission and/orreception by the base station 105. Some signals, such as data signalsassociated with a particular receiving device, may be transmitted by abase station 105 in a single beam direction (e.g., a directionassociated with the receiving device, such as a UE 115). In someexamples, the beam direction associated with transmissions along asingle beam direction may be determined based at least in in part on asignal that was transmitted in different beam directions. For example, aUE 115 may receive one or more of the signals transmitted by the basestation 105 in different directions, and the UE 115 may report to thebase station 105 an indication of the signal it received with a highestsignal quality, or an otherwise acceptable signal quality. Althoughthese techniques are described with reference to signals transmitted inone or more directions by a base station 105, a UE 115 may employsimilar techniques for transmitting signals multiple times in differentdirections (e.g., for identifying a beam direction for subsequenttransmission or reception by the UE 115), or transmitting a signal in asingle direction (e.g., for transmitting data to a receiving device).

A receiving device (e.g., a UE 115, which may be an example of a mmWreceiving device) may try multiple receive beams when receiving varioussignals from the base station 105, such as synchronization signals,reference signals, beam selection signals, or other control signals. Forexample, a receiving device may try multiple receive directions byreceiving via different antenna subarrays, by processing receivedsignals according to different antenna subarrays, by receiving accordingto different receive beamforming weight sets applied to signals receivedat a plurality of antenna elements of an antenna array, or by processingreceived signals according to different receive beamforming weight setsapplied to signals received at a plurality of antenna elements of anantenna array, any of which may be referred to as “listening” accordingto different receive beams or receive directions. In some examples areceiving device may use a single receive beam to receive along a singlebeam direction (e.g., when receiving a data signal). The single receivebeam may be aligned in a beam direction determined based at least inpart on listening according to different receive beam directions (e.g.,a beam direction determined to have a highest signal strength, highestsignal-to-noise ratio, or otherwise acceptable signal quality based atleast in part on listening according to multiple beam directions).

In some cases, the antennas of a base station 105 or UE 115 may belocated within one or more antenna arrays, which may support MIMOoperations, or transmit or receive beamforming. For example, one or morebase station antennas or antenna arrays may be co-located at an antennaassembly, such as an antenna tower. In some cases, antennas or antennaarrays associated with a base station 105 may be located in diversegeographic locations. A base station 105 may have an antenna array witha number of rows and columns of antenna ports that the base station 105may use to support beamforming of communications with a UE 115.Likewise, a UE 115 may have one or more antenna arrays that may supportvarious MIMO or beamforming operations.

In some cases, wireless communications system 100 may be a packet-basednetwork that operate according to a layered protocol stack. In the userplane, communications at the bearer or Packet Data Convergence Protocol(PDCP) layer may be IP-based. A Radio Link Control (RLC) layer may insome cases perform packet segmentation and reassembly to communicateover logical channels. A Medium Access Control (MAC) layer may performpriority handling and multiplexing of logical channels into transportchannels. The MAC layer may also use hybrid automatic repeat request(HARQ) to provide retransmission at the MAC layer to improve linkefficiency. In the control plane, the Radio Resource Control (RRC)protocol layer may provide establishment, configuration, and maintenanceof an RRC connection between a UE 115 and a base station 105 or corenetwork 130 supporting radio bearers for user plane data. At thePhysical (PHY) layer, transport channels may be mapped to physicalchannels.

In some cases, UEs 115 and base stations 105 may support retransmissionsof data to increase the likelihood that data is received successfully.HARQ feedback is one technique of increasing the likelihood that data isreceived correctly over a communication link 125. HARQ may include acombination of error detection (e.g., using a cyclic redundancy check(CRC)), forward error correction (FEC), and retransmission (e.g.,automatic repeat request (ARQ)). HARQ may improve throughput at the MAClayer in poor radio conditions (e.g., signal-to-noise conditions). Insome cases, a wireless device may support same-slot HARQ feedback, wherethe device may provide HARQ feedback in a specific slot for datareceived in a previous symbol in the slot. In other cases, the devicemay provide HARQ feedback in a subsequent slot, or according to someother time interval.

Time intervals in LTE or NR may be expressed in multiples of a basictime unit, which may, for example, refer to a sampling period ofT_(s)=1/30,720,000 seconds. Time intervals of a communications resourcemay be organized according to radio frames each having a duration of 10milliseconds (ms), where the frame period may be expressed asT_(f)=307,200 T_(s). The radio frames may be identified by a systemframe number (SFN) ranging from 0 to 1023. Each frame may include 10subframes numbered from 0 to 9, and each subframe may have a duration of1 ms. A subframe may be further divided into 2 slots each having aduration of 0.5 ms, and each slot may contain 6 or 7 modulation symbolperiods (e.g., depending on the length of the cyclic prefix prepended toeach symbol period). Excluding the cyclic prefix, each symbol period maycontain 2048 sampling periods. In some cases a subframe may be thesmallest scheduling unit of the wireless communications system 100, andmay be referred to as a transmission time interval (TTI). In othercases, a smallest scheduling unit of the wireless communications system100 may be shorter than a subframe or may be dynamically selected (e.g.,in bursts of shortened TTIs (sTTIs) or in selected component carriersusing sTTIs).

In some wireless communications systems, a slot may further be dividedinto multiple mini-slots containing one or more symbols. In someinstances, a symbol of a mini-slot or a mini-slot may be the smallestunit of scheduling. Each symbol may vary in duration depending on thesubcarrier spacing or frequency band of operation, for example. Further,some wireless communications systems may implement slot aggregation inwhich multiple slots or mini-slots are aggregated together and used forcommunication between a UE 115 and a base station 105.

The term “carrier” refers to a set of radio frequency spectrum resourceshaving a defined physical layer structure for supporting communicationsover a communication link 125. For example, a carrier of a communicationlink 125 may include a portion of a radio frequency spectrum band thatis operated according to physical layer channels for a given radioaccess technology. Each physical layer channel may carry user data,control information, or other signaling. A carrier may be associatedwith a pre-defined frequency channel (e.g., an E-UTRA absolute radiofrequency channel number (EARFCN)), and may be positioned according to achannel raster for discovery by UEs 115. Carriers may be downlink oruplink (e.g., in an FDD mode), or be configured to carry downlink anduplink communications (e.g., in a TDD mode). In some examples, signalwaveforms transmitted over a carrier may be made up of multiplesub-carriers (e.g., using multi-carrier modulation (MCM) techniques suchas OFDM or DFT-s-OFDM).

The organizational structure of the carriers may be different fordifferent radio access technologies (e.g., LTE, LTE-A, LTE-A Pro, NR,etc.). For example, communications over a carrier may be organizedaccording to TTIs or slots, each of which may include user data as wellas control information or signaling to support decoding the user data. Acarrier may also include dedicated acquisition signaling (e.g.,synchronization signals or system information, etc.) and controlsignaling that coordinates operation for the carrier. In some examples(e.g., in a carrier aggregation configuration), a carrier may also haveacquisition signaling or control signaling that coordinates operationsfor other carriers.

Physical channels may be multiplexed on a carrier according to varioustechniques. A physical control channel and a physical data channel maybe multiplexed on a downlink carrier, for example, using time divisionmultiplexing (TDM) techniques, frequency division multiplexing (FDM)techniques, or hybrid TDM-FDM techniques. In some examples, controlinformation transmitted in a physical control channel may be distributedbetween different control regions in a cascaded manner (e.g., between acommon control region or common search space and one or more UE-specificcontrol regions or UE-specific search spaces).

A carrier may be associated with a particular bandwidth of the radiofrequency spectrum, and in some examples the carrier bandwidth may bereferred to as a “system bandwidth” of the carrier or the wirelesscommunications system 100. For example, the carrier bandwidth may be oneof a number of predetermined bandwidths for carriers of a particularradio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 MHz). Insome examples, each served UE 115 may be configured for operating overportions or all of the carrier bandwidth. In other examples, some UEs115 may be configured for operation using a narrowband protocol typethat is associated with a predefined portion or range (e.g., set ofsubcarriers or RBs) within a carrier (e.g., “in-band” deployment of anarrowband protocol type).

In a system employing MCM techniques, a resource element may include onesymbol period (e.g., a duration of one modulation symbol) and onesubcarrier, where the symbol period and subcarrier spacing are inverselyrelated. The number of bits carried by each resource element may dependon the modulation scheme (e.g., the order of the modulation scheme).Thus, the more resource elements that a UE 115 receives and the higherthe order of the modulation scheme, the higher the data rate may be forthe UE 115. In MIMO systems, a wireless communications resource mayrefer to a combination of a radio frequency spectrum resource, a timeresource, and a spatial resource (e.g., spatial layers), and the use ofmultiple spatial layers may further increase the data rate forcommunications with a UE 115.

Devices of the wireless communications system 100 (e.g., base stations105 or UEs 115) may have a hardware configuration that supportscommunications over a particular carrier bandwidth, or may beconfigurable to support communications over one of a set of carrierbandwidths. In some examples, the wireless communications system 100 mayinclude base stations 105 and/or UEs 115 that can support simultaneouscommunications via carriers associated with more than one differentcarrier bandwidth.

Wireless communications system 100 may support communication with a UE115 on multiple cells or carriers, a feature which may be referred to ascarrier aggregation (CA) or multi-carrier operation. A UE 115 may beconfigured with multiple downlink CCs and one or more uplink CCsaccording to a carrier aggregation configuration. Carrier aggregationmay be used with both FDD and TDD component carriers.

In some cases, wireless communications system 100 may utilize enhancedcomponent carriers (eCCs). An eCC may be characterized by one or morefeatures including wider carrier or frequency channel bandwidth, shortersymbol duration, shorter TTI duration, or modified control channelconfiguration. In some cases, an eCC may be associated with a carrieraggregation configuration or a dual connectivity configuration (e.g.,when multiple serving cells have a suboptimal or non-ideal backhaullink). An eCC may also be configured for use in unlicensed spectrum orshared spectrum (e.g., where more than one operator is allowed to usethe spectrum). An eCC characterized by wide carrier bandwidth mayinclude one or more segments that may be utilized by UEs 115 that arenot capable of monitoring the whole carrier bandwidth or are otherwiseconfigured to use a limited carrier bandwidth (e.g., to conserve power).

In some cases, an eCC may utilize a different symbol duration than otherCCs, which may include use of a reduced symbol duration as compared withsymbol durations of the other CCs. A shorter symbol duration may beassociated with increased spacing between adjacent subcarriers. Adevice, such as a UE 115 or base station 105, utilizing eCCs maytransmit wideband signals (e.g., according to frequency channel orcarrier bandwidths of 20, 40, 60, 80 MHz, etc.) at reduced symboldurations (e.g., 16.67 microseconds). A TTI in eCC may include one ormultiple symbol periods. In some cases, the TTI duration (that is, thenumber of symbol periods in a TTI) may be variable.

Wireless communications systems such as an NR system may utilize anycombination of licensed, shared, and unlicensed spectrum bands, amongothers. The flexibility of eCC symbol duration and subcarrier spacingmay allow for the use of eCC across multiple spectrums. In someexamples, NR shared spectrum may increase spectrum utilization andspectral efficiency, specifically through dynamic vertical (e.g., acrossfrequency) and horizontal (e.g., across time) sharing of resources.

In some aspects, a UE 115 may receive, from a base station 105, a groupidentifier of the UE. The UE 115 may receive, from the base station 105,an indication of one or more group identifiers associated with scheduledcommunications with the base station 105 during a time period. The UE115 may contend, based at least in part on the group identifier of theUE and the one or more group identifiers received from the base station,for access to a set of AUL resources during the time period. The UE 115may perform, based at least in part on the contending, an AULtransmission to the base station 105 using the set of AUL resources.

In some aspects, a base station 105 may transmit, to a UE 115, a groupidentifier of the UE 115. The base station 105 may transmit anindication of one or more group identifiers associated with scheduledcommunications with the base station 105 during a time period, where theone or more group identifiers includes the group identifier of the UE115. The base station 105 may receive an AUL transmission from the UE115 over AUL resources during the time period based at least in part onthe indication.

In some aspects, a base station 105 may determine that a scheduledcommunication with a UE 115 is to be performed using a first transmitbeam in a mmW wireless communication system. The base station 105 maytransmit, using a second transmit beam that has a wider beam width thanthe first transmit beam, a reservation message providing an indicationof the scheduled communication, where the indication is conveyed in acommon downlink control indicator (DCI). The base station 105 mayperform the scheduled communication with the UE 115 using the firsttransmit beam.

FIG. 2 illustrates an example of a wireless communications system 200that supports group based scheduled and autonomous uplink coexistence inaccordance with aspects of the present disclosure. In some examples,wireless communications system 200 may implement aspects of wirelesscommunications system 100. Wireless communications system 200 mayinclude a base station 205 and UEs 210, 215, 220, 225, 230, 235, and240, which may be examples of the corresponding device described herein.Broadly, wireless communications system 200 illustrates one example ofbase station 205 grouping UEs into one or more groups and schedulingcommunications for the UEs based on the grouping.

Generally, base station 205 may be in communication with each of UEs210, 215, 220, 225, 230, 235, and 240. For example, each of the UEs 210,215, 220, 225, 230, 235, and 240 may be located within the coverage area(such as a cell coverage area) a base station 205. In some aspects, oneor more of the UEs 210, 215, 220, 225, 230, 235, and 240 may beconfigured for AUL transmissions and/or SUL transmissions. To avoidpossible interference, base station 205 may group the UEs 210, 215, 220,225, 230, 235, and 240 into one or more groups. Each group of the one ormore UEs 210, 215, 220, 225, 230, 235, and 240 may then be scheduled forcommunications during a particular time period (such as slot(s)) basedon the grouping.

In some aspects, the grouping may be based on feedback messages receivedfrom the UEs. For example, each UE 210, 215, 220, 225, 230, 235, or 240may perform a measurement procedure to detect neighboring UEs 210, 215,220, 225, 230, 235, and/or 240, such as a UE-to-UE measurementprocedure. The measurement procedure may be an energy based measurementprocedure based on reference signal transmissions (e.g., soundingreference symbol (SRS) transmissions) from the neighboring UEs 210, 215,220, 225, 230, 235, and/or 240. Based upon the signal strength of theneighboring UEs, each UE 210, 215, 220, 225, 230, 235, or 240 maytransmit a feedback signal or message to base station 205 that includesor otherwise conveys information associated with the neighboring UE(s)210, 215, 220, 225, 230, 235, and/or 240. In some examples, the feedbackinformation may simply identify the neighboring UEs 210, 215, 220, 225,230, 235, and/or 240 that the reporting UE 210, 215, 220, 225, 230, 235,or 240 detected during the measurement procedure. In some examples, thefeedback information may additionally or alternatively includemeasurement information associated with each detected neighboring UE210, 215, 220, 225, 230, 235, and/or 240 (such as an indication of thereceived power level). In some examples, the reporting UE 210, 215, 220,225, 230, 235, or 240 may perform preselection of the neighboring UEs210, 215, 220, 225, 230, 235, and/or 240, e.g., only include anindication of neighboring UEs 210, 215, 220, 225, 230, 235, and/or 240having a receive power level that satisfies a threshold. In someaspects, the measurement and reporting from the UEs 210, 215, 220, 225,230, 235, and 240 within the coverage area of base station 205 may beperformed according to a periodic schedule, aperiodically, based onchanges (such as a change in a receive power level for one or moreneighbor UEs), a mobility state, and the like.

In some aspects, the feedback message may include location basedinformation for the reporting UE 210, 215, 220, 225, 230, 235, or 240and, in some examples, for the neighboring UE(s) 210, 215, 220, 225,230, 235, and/or 240. The location information may include absolutelocation information, e.g., geographical coordinates, and/or relativelocation information, e.g., location with respect to the base station205. The feedback message may include mobility information, such as amobility state, a movement direction, a speed, and the like, for thereporting UE 210, 215, 220, 225, 230, 235, and/or 240 and, in someexamples, for the neighboring UE(s) 210, 215, 220, 225, 230, 235, and/or240.

Base station 205 may receive the feedback messages from the reportingUEs 210, 215, 220, 225, 230, 235, and 240 and then group the UEs 210,215, 220, 225, 230, 235, and 240 into one or more groups based on theneighboring UEs 210, 215, 220, 225, 230, 235, and/or 240. In someaspects, this may include grouping UEs 210, 215, 220, 225, 230, 235, and240 within a particular group based on the UEs 210, 215, 220, 225, 230,235, and 240 being within communication range of each other. For exampleand as is indicated in FIG. 2, base station 205 may group UEs 210, 215,and 220 into a first group 245 based on these UEs 210, 215, and 220being proximate to each other. Similarly, base station 205 may group UEs230 and 235 into a second group 250 based on these UEs 230 and 235 beingproximate to each other. UEs 225 and 240 may each be grouped into asingle UE group, e.g. a group of UEs consisting of only one UE, based onthere being no neighboring UEs located proximate to UEs 225 and/or 240.

Generally, the UEs 210, 215, 220, 225, 230, 235, and 240 being proximateto each may refer to the UEs 210, 215, 220, 225, 230, 235, and 240 beingwithin communication range of each other, based on the UEs 210, 215,220, 225, 230, 235, and 240 being physically located within definedrange of each other, and the like. For example and as is illustrated inFIG. 2, UEs 210, 215, and 220 may be considered proximate to each otherin that each UE is within a communication range of the other UEs. Thatis, UE 210 is within communication range of UEs 215 and 220, UE 215 iswithin communication range of UEs 210 and 220, and so on. UE 220 may bein communication range of UE 225, but UE 225 may not be included in thefirst group 245 because it is not in communication range of UEs 210 and215. Similarly, UEs 230 and 235 may be considered proximate to eachother in that each UE is within a communication range of the other UE.That is, UE 230 is within communication range of UE 235, and vice versa.UE 230 may be in communication range of UE 225, but UE 225 may not beincluded in the second group 250 because it is not in communicationrange of UE 235. UE 240 may be in communication range of UE 235, but UE240 may not be included in the second group 250 because it is not incommunication range of UE 230.

Thus, base station 205 may group the UEs 210, 215, 220, 225, 230, 235,and 240 into one or more groups and transmit a signal to the UEs 210,215, 220, 225, 230, 235, and 240 indicating which group(s) the UE(s)210, 215, 220, 225, 230, 235, and 240 belong to, e.g., the groupidentifier(s) of the UE(s) 210, 215, 220, 225, 230, 235, and 240. Theindication of the group identifier(s) for the UE(s) 210, 215, 220, 225,230, 235, and 240 may be included or otherwise conveyed in a DCI, amedium access control (MAC) control element (CE), an RRC message, abroadcast message, and the like. In some cases in which UEs 210, 215,220, 225, 230, 235, and 240 are being FDMed, the indication may carrymultiple bits to indicate whether the group identifier (ID) isdetermined per a given sub-band or bandwidth part. In some cases, acommon DCI may indicate the group ID which the base station 105 intendsto schedule in a given slot. In some cases, the base station 105 may usedifferent group IDs for UE data and control signaling (e.g., UCI onPUCCH).

Base station 205 may then schedule communications for certain UEs 210,215, 220, 225, 230, 235, and/or 240 based at least in part on thegrouping. For example, base station 205 may schedule AUL transmissionfor UEs 210, 215, 220, 225, 230, 235, and/or 240 within a group thatalso includes UEs 210, 215, 220, 225, 230, 235, and/or 240 performingSUL transmissions. As one example, base station 205 may schedule thefirst group 245 for communications during a time period (e.g., a slot)in which UE 215 is scheduled for SUL transmissions and UEs 210 and/or220 are scheduled for AUL transmissions. Base station 205 may transmit asignal to UEs 210, 215, 220, 225, 230, 235, and 240 within its coveragearea that provides an indication of which group identifiers areassociated with the scheduled communications during the time period,e.g., during the slot. The indication may be included or otherwiseconveyed in a DCI.

In the example where the first group 245 is scheduled for communicationsduring the slot, UEs 225, 230, 235, 240, may receive the indication anddetermine that they will not be performing communications during slot.UE 215 may receive the indication and determine that it will beperforming SUL transmissions during that slot. UEs 210 and/or 220 mayreceive the indication and determine that they are configured to performAUL transmissions during the slot. Thus, UEs 210 and/or 220 may contendfor access to AUL resources during the slot based on their groupidentifier and the indication of which groups have been scheduled forcommunications during the slot. Contention for access to the AULresources may include UEs 210 and/or 220 performing an LBT procedureand, if successful, performing the AUL transmission using the AULresources. If, however, UEs 210 and/or 220 detect SUL transmissions fromUE 215 during the LBT procedure, they may perform a backoff procedureand wait to perform the AUL transmissions during a later slot.

In some aspects, there may be overlapping (or at least partiallyoverlapping) resource for AUL and SUL transmissions. The resources forthe AUL transmissions may, in some examples, be associated with a higherpriority level than the resources for the SUL transmissions. In onenon-limiting example, this may include the starting position (e.g., thestarting symbol) of the resources for the AUL transmissions being beforethe starting position of the resources for the SUL transmissions. Thismay provide a mechanism where the SUL transmission can occur only whenthe AUL transmissions have not occurred, e.g., when no AUL configured UEaccesses the resources for the AUL transmission.

In some aspects, an SUL configured UE 210, 215, 220, 225, 230, 235, or240 may be allocated resources that are also allocated for AULtransmissions, e.g., resources that are overlapping or partiallyoverlapping. The SUL configured UE 210, 215, 220, 225, 230, 235, or 240may use symbols around the AUL resource (including leaving some symbolsaround the AUL allocation for LBT gaps). When the SUL configured UE 210,215, 220, 225, 230, 235, or 240 does not detect any AUL transmissions,the SUL configured UE 210, 215, 220, 225, 230, 235, or 240 can starttransmitting on the AUL symbols as well.

In some aspects, the SUL configured UE 210, 215, 220, 225, 230, 235, or240 may be allocated a conditional grant for resources that overlap (orpartially overlaps) with an AUL resource, but which begins after thestart of the AUL resource. Even in the scenario where no LBT procedureis required, the SUL configured UE 210, 215, 220, 225, 230, 235, or 240may use the AUL resource after a successful LBT procedure, e.g.,performed to listen for AUL transmissions on the overlapping resources.Similarly, an AUL configured UE 210, 215, 220, 225, 230, 235, or 240 mayalso perform an LBT procedure, even though it is not a requirement, inorder to detect any ongoing SUL transmissions and avoid interference. Insome aspects, this may support efficient usage of AUL resources by SULconfigured UEs 210, 215, 220, 225, 230, 235, and/or 240.

FIG. 3 illustrates an example of a flowchart 300 that supports groupbased scheduled and autonomous uplink coexistence in accordance withaspects of the present disclosure. In some examples, flowchart 300 mayimplement aspects of wireless communications systems 100 and/or 200.Aspects of flowchart 300 may be implemented by a UE 115, which may be anexample of the corresponding device described herein. Generally,flowchart 300 illustrates one example of a UE 115 providing informationin a feedback message that can be used for grouping the UE 115 in theone or more groups.

At 305, the UE 115 may receive a signal from a base station 105 thatincludes or otherwise conveys an indication of a request for the UE 115to perform a UE-to-UE measurement procedure. In some examples, theUE-to-UE measurement procedure may be an NR cross-link interference(CLI) framework procedure. The UE 115 may receive the measurementrequest from the base station 105 according to a periodic schedule,aperiodically, based on a changed condition, and the like.

At 310, the UE 115 may perform a UE-to-UE measurement procedure. In someaspects, this may include the UE 115 monitoring for transmissions fromthe neighboring UEs 115 during the measurement procedure, such as SRStransmissions scheduled by the base station 105. Based on the UE 115detecting any transmissions, the UE 115 may also determine the signalstrength or power level for the received signal(s). In some aspects, theUE-to-UE measurement procedure may be an energy based detectionprocedure.

At 315, the UE 115 may determine whether or not it has any neighboringUEs 115. For example, this determination may be based on whether the UE115 detected any transmissions from neighboring UEs 115 during theUE-to-UE measurement procedure. In some aspects, this may be determinedbased on location information associated with the UE 115 and anyneighboring UEs 115.

If the UE 115 determines that there are no neighboring UEs 115, at 320the UE 115 may transmit a feedback message to the base station 105including or otherwise conveying an indication that there are noneighboring UEs 115 for the reporting UE 115.

If the UE 115 determines that there are neighboring UEs 115, at 325 theUE 115 may optionally determine whether the neighboring UEs 115 have areceive power level that is above a threshold. For example, the UE 115may determine, for each detected neighboring UE 115, what the receivepower level is for the SRS transmission and then compare the receivepower level to a threshold. If the receive power level for at least oneneighboring UE 115 satisfies the threshold, at 330 the UE 115 maytransmit a feedback message to the base station 105 that includes anindication of the neighboring UE 115. If the receive power level for allof the neighboring UE 115 does not satisfy the threshold, at 320 the UE115 may transmit the feedback message to the base station that includesan indication that there are no neighboring UEs 115 for the reporting UE115. However, as discussed above the features at 325 may be optionaland, when not implemented, at 330 the UE 115 may transmit the feedbackmessage to the base station 105 that includes an indication ofneighboring UEs 115 having any receive power level (e.g., identifies theneighboring UEs 115 and, in some examples, provides an indication oftheir associated receive power level).

Thus, UEs 115 in close range to each other may be included as part of agroup. The base station 105 may configure the UE-to-UE measurements toenable grouping UEs 115 (e.g., using the NR CLI framework). Each UE 115may transmit SRS (one or more times, or periodically) to enable otherUEs 115 to determine which set of UEs 115 hear each other, e.g., arewithin communication range of each other. The scrambling configurationand/or resources for SRS may be indicated by the base station 105 to allof the UEs 115. In some examples, the transmit power for SRS may beproportional to (e.g., equal to) to the power used for PUSCHtransmissions. When one UE 115 sounds (e.g., transmits SRS), all theother UEs 115 are silent so that they can hear the SRS of neighboringUE(s) 115. In some examples and after the sounding procedure, each UE115 may determine whether there are any neighboring UE(s) 115 and, ifso, report this to the base station in a feedback message. In someexamples, this may be based on the receive power level of detectedSRS(s) being compared to a configured threshold. This UE-to-UEmeasurement procedure may be repeated to enable accurate measurements,to update the UE grouping, and/or to overcome LBT failure at some of theUEs 115. The base station 105 may use the reports (e.g., the feedbackmessages) from all the UEs 115 to divide the UEs 115 into groups. If thepathloss for a UE 115 changes beyond a threshold and/or if the UE 115 ismobile, the base station may trigger SRS sounding again to enable the UE115 to be placed in a new group, if needed, e.g., to update the UEgrouping.

In some aspects, transmit power control and resource block allocationmay be considered. For example, in LTE, LAA and multi-fire (MF), thetransmit power may scale as a function of the resource block allocation(e.g., in order to maintain constant power spectral density (PSD)).However, this approach may be problematic in a shared or unlicensedspectrum as the UE transmit power scales down with a smaller resourceblock allocation. This may result in a reduced LBT blocking range forthat transmission. Aspects of the described techniques may support thetransmit power from each UE 115 being relatively constant irrespectiveof the resource block allocation, e.g., a constant SRS transmissionpower. Thus, in some examples each UE 115 may also report the set ofneighboring UE(s) 115 that it hears and also include the received energylevel (e.g., the SRS-RSRP and SRS-RSSI in the CLI framework) in thefeedback message. Based on this information, the base station 105 mayconstruct hearing graphs based on multiple thresholds and then decide onthe UE grouping based on its scheduling strategy. Alternatively, thebase station 105 can configure each UE 115 with multiple groupidentifiers (e.g., depending on the threshold it used to determine theinterference graphs). The base station 105 can indicate the groupidentifier (ID) applicable in common signaling (e.g., in a common DCI).

FIG. 4 illustrates an example of a flowchart 400 that supports groupbased scheduled and autonomous uplink coexistence in accordance withaspects of the present disclosure. In some examples, flowchart 400 mayimplement aspects of wireless communications systems 100/200 and/orflowchart 300. Aspects of flowchart 400 may be implemented by a basestation 105, which may be an example of the corresponding devicedescribed herein. Generally, flowchart 400 illustrates one example of abase station grouping UEs in the one or more groups based on feedbackmessage signaling.

At 405, the base station 105 may transmit a signal to the UEs 115 withinits coverage area that includes or otherwise conveys an indication of arequest for the UEs 115 to perform a UE-to-UE measurement procedure. Insome examples, the UE-to-UE measurement procedure may be an NR CLIframework procedure. The base station 105 may transmit the measurementrequest according to a periodic schedule, aperiodically, based on achanged condition, and the like.

At 410, the base station 105 may receive feedback message(s) from UE(s)115 within its coverage area. For example, each UE 115 may perform theUE-to-UE measurement procedure as is described above and respond bytransmitting feedback messages to the base station 105.

At 415, the base station 105 may determine, for each reporting UE 115,whether or not that UE 115 has any neighboring UEs 115. For example,this determination may be based on the feedback message from thereporting UE 115 indicating whether the UE 115 detected anytransmissions from neighboring UEs 115 during the UE-to-UE measurementprocedure. In some aspects, this may be determined based on locationinformation associated with the reporting UE 115 and any neighboring UEs115.

If the base station 105 determines that there are no neighboring UEs 115for the reporting UEs 115, at 420 the base station 105 may refrain fromgrouping the UEs 115 into the one or more groups.

If the base station 105 determines that there are neighboring UEs 115,at 425 the base station 105 may determine, for each reporting UE 115,whether the neighboring UEs 115 have a receive power level that is abovea threshold. For example, the base station may determine, for eachreporting UE 115, what the receive power level was for the SRStransmission and then compare the receive power level to a threshold. Ifthe receive power level for at least one neighboring UE 115 satisfiesthe threshold, at 430 the base station may group the reporting UE 115and the neighboring UE(s) 115 into a group. If the receive power levelfor all of the neighboring UE 115 does not satisfy the threshold, at 420the base station 105 may not group the reporting UE 115 into the one ormore groups of UEs 115. The base station 105 may transmit a signal toUEs 115 indicating which group(s) that the UE 115 belongs to and thenschedule communications for UEs 115 based at least in part on thegrouping.

One example of the base station 105 grouping the UEs 115 into one ormore groups may be based on a minimal clique cover. The base station 105may construct a graph of the set of UEs 115 that hear each other. Theminimal clique cover of that graph may provide a set of UEs 115 whichcan all hear each other, e.g., are within communication range of eachother, are proximate to each other, and the like. It is to be understoodthat the described grouping techniques are not limited to a minimalclique cover, and that other grouping techniques may be used. A cliquemay be a set of UEs 115 (group of UEs) that hear each other mutually. IfUEs 115 in group one can block each other, the SUL transmissions of UEs115 in group one may block AUL transmissions of UEs 115 in that group.In some aspects and due to the nature of hearing graphs, the basestation 105 may divide the UEs 115 into multiple groups.

FIG. 5 illustrates an example of a process 500 that supports group basedscheduled and autonomous uplink coexistence in accordance with aspectsof the present disclosure. In some examples, process 500 may implementaspects of wireless communications systems 100/200 and/or flowcharts300/400. Process 500 may include a base station 505 and the UE 510,which may be examples of the corresponding devices described herein.

At 515, base station 505 may transmit (and UE 510 may receive) a groupidentifier of the UE 510. In some aspects, base station 505 may transmitthe indication of a group identifier of the UE 510 in a common DCI, inMAC CE, in an RRC message, and the like.

In some aspects, the group identifier of the UE 510 may be based on thefeedback message. For example, UE 510 may perform one or more instancesof a UE-to-UE measurement procedure and, based on the procedure,transmit a feedback message to base station 505. During the procedure,UE 510 may determine that one or more neighboring UEs are associatedwith receive power levels that are above a threshold value and configurethe feedback message to indicate an identifier of the one or moreneighboring UEs. In some aspects, the feedback message may include orotherwise provide an indication of the receive power level for the oneor more neighboring UEs. In some aspects, the UE-to-UE measurementprocedure and feedback message reporting may be repeated according to aperiodic schedule, an aperiodic schedule, a change in the receive powerlevels for at least one of the neighboring UEs that is above athreshold, a mobility state of the UE 510, and the like.

At 520, base station 505 may transmit (and UE 510 may receive) anindication of one or more group identifiers that are associated withscheduled communications with the base station 505 during a time period,e.g., during a slot. Generally, the indicated one or more groupidentifiers may be scheduled to perform AUL and/or SUL transmissionsduring that time period. In some aspects, the indication of the one ormore group identifiers may be provided in a DCI, such as a common DCI.

At 525, UE 510 may contend for AUL resources during the time period. UE510 may contend for the AUL resources based, at least in some aspects,on the group identifier of the UE and/or the indication of the one ormore group identifiers that are scheduled for communications. In someaspects, this may include UE 510 performing an LBT procedure to contendfor the AUL resources. The LBT procedure may be considered successful(e.g., in that the UE 510 secures the AUL resources) based on the UE 510not detecting an energy level during the LBT procedure, such as energyassociated with an SUL transmission from the neighboring UEs. If the UE510 detects an energy level during the LBT procedure, the UE 510 mayrefrain from performing an AUL transmission (not shown) and, insteaddelay the AUL transmission to a later time period.

At 530, UE 510 may perform an AUL transmission to base station 505 usingthe set of AUL resources. In some aspects, UE 510 may perform the AULtransmission based on the results of contending for the AUL resources,e.g., based on the LBT procedure being successful.

FIG. 6 illustrates an example of a wireless communications system 600that supports group based scheduled and autonomous uplink coexistence inaccordance with aspects of the present disclosure. In some examples,wireless communications system 600 may implement aspects of wirelesscommunications systems 100/200, flowcharts 300/400, and/or process 500.Wireless communications system 600 may include a base station 605 andUEs 610 and 615, which may be examples of the corresponding devicesdescribed herein. In some aspects, wireless communications system 600may be a mmW wireless communication system.

Generally, wireless communications system 600 illustrates one example ofhow a base station can avoid interference to downlink transmissionscaused by AUL configured UEs. For example, base station 605 maydetermine that it has downlink communications to transmit to UE 610. Thedownlink communications may be transmitted to UE 610 using a firsttransmit beam 620. UE 615, however, may be configured to perform AULtransmissions to base station 605.

Accordingly, base station 605 may use a second transmit beam 625 totransmit a reservation message that includes or otherwise provides anindication of the downlink communications to be performed to UE 610during a time period. In some aspects, the indication may be conveyed ina common DCI. Base station 605 may determine or otherwise identify thatUE 610 as one or more neighboring UEs that are configured for AULtransmissions, e.g. such as UE 615. Base station 605 may thereforequasi-co-locate (QCL) the common DCI with the DCI that the neighboringUEs that are configured for AUL transmissions will be monitoring.

Accordingly, UE 615 may receive the reservation message and determinethe base station 605 will be performing downlink transmissions to UE 610during the time period. In response, UE 615 may refrain from contendingfor the medium in order to perform AUL transmissions during the timeperiod. Instead, base station 605 may perform the downlink transmissionsto UE 610 using the first transmit beam 620.

Generally, the second transmit beam 625 may have a wider beam width thanthe first transmit beam 620. In some aspects, the first transmit beam620 may be a P3 transmit beam and the second transmit beam 625 may be aP1 or P2 transmit beam.

Thus, aspects of the described techniques may provide a solution tocertain problems that may exist in mmW networks with sufficient beamdirectionality. One example problem relates to UE-to-UE discovery, whichmay not be reliable due to the directionality of transmission. An LBTprocedure performed by neighboring UEs (such as UE 615) may not beblocked due to an uplink transmission from a UE (such as UE 610) due tothe nature of the beam based transmission. The base station 605 mayschedule communications using a scheduling request based transmissionwithout any perceivable impact on user experience. Another exampleproblem relates to cross-link interference. The base station 605 mayperform downlink transmission to UE 610 using configured AUL resourcesfor UE 615. This may result in cross-link interference at UE 610.

To address these and other problems, aspects of the described techniquesmay include base station 605 signaling to UEs on a wide beam (P1 beam)or on multiple (P2) beams that it will schedule a UE for downlinkcommunications (e.g., UE 610). UEs that receive this signaling (e.g., UE615) may backoff from performing AUL transmissions when the downlinkcommunications are scheduled. The signaling may use a QCL DCI with thebeam that the UE 615 is required to monitor before transmitting onconfigured AUL resources.

FIG. 7 illustrates an example of a process 700 that supports group basedscheduled and autonomous uplink coexistence in accordance with aspectsof the present disclosure. In some examples, process 700 may implementaspects of wireless communications systems 100/200/600, flowcharts300/400, and/or process 500. Process 700 may include a base station 705and a UE 710, which may be examples of the corresponding devicesdescribed herein.

At 715, base station 705 may determine that downlink communications areto be performed to UE 710. The downlink communications may be performedusing a first transmit beam in a mmW wireless communication system.

At 720, base station 705 may transmit a reservation message thatprovides an indication of the downlink communications. The reservationmessage may be transmitted in a common DCI. The reservation message maybe transmitted using a second transmit beam that has a beam width thatis wider than the first transmit beam. In some aspects, the reservationmessage may be provided in order for AUL configured UEs that are locatedproximate to UE 710 to refrain from contending for AUL resources duringthe time period.

In some aspects, base station 705 may identify that there are one ormore neighboring UEs located near UE 710 that are configured for AULcommunications. Based on this determination, base station 705 may QCLthe common DCI with a DCI that the one or more neighboring UEs areconfigured to monitor for the AUL communications.

At 725, base station 705 might perform the downlink communications to UE710 using the first transmit beam. In some aspects, the first transmitbeam may be a P3 transmit beam and the second transmit beam may be a P1or P2 transmit beam.

FIG. 8 shows a block diagram 800 of a UE 805 that supports group basedscheduled and autonomous uplink coexistence in accordance with aspectsof the present disclosure. UE 805 may be an example of aspects of a UE115 as described herein. UE 805 may include receiver 810, communicationsmanager 815, and transmitter 820. UE 805 may also include a processor.Each of these components may be in communication with one another (e.g.,via one or more buses).

Receiver 810 may receive information such as packets, user data, orcontrol information associated with various information channels (e.g.,control channels, data channels, and information related to group basedscheduled and autonomous uplink coexistence, etc.). Information may bepassed on to other components of the device 805. The receiver 810 may bean example of aspects of the transceiver 1120 described with referenceto FIG. 11. The receiver 810 may utilize a single antenna or a set ofantennas.

Communications manager 815 may be an example of aspects of thecommunications manager 1110 described with reference to FIG. 11.

Communications manager 815 and/or at least some of its varioussub-components may be implemented in hardware, software executed by aprocessor, firmware, or any combination thereof. If implemented insoftware executed by a processor, the functions of the communicationsmanager 815 and/or at least some of its various sub-components may beexecuted by a general-purpose processor, a digital signal processor(DSP), an application-specific integrated circuit (ASIC), afield-programmable gate array (FPGA) or other programmable logic device,discrete gate or transistor logic, discrete hardware components, or anycombination thereof designed to perform the functions described in thepresent disclosure. The communications manager 815 and/or at least someof its various sub-components may be physically located at variouspositions, including being distributed such that portions of functionsare implemented at different physical locations by one or more physicaldevices. In some examples, communications manager 815 and/or at leastsome of its various sub-components may be a separate and distinctcomponent in accordance with various aspects of the present disclosure.In other examples, communications manager 815 and/or at least some ofits various sub-components may be combined with one or more otherhardware components, including but not limited to an input/output (I/O)component, a transceiver, a network server, another computing device,one or more other components described in the present disclosure, or acombination thereof in accordance with various aspects of the presentdisclosure.

Communications manager 815 may receive, from a base station, a groupidentifier of the UE, receive, from the base station, an indication ofone or more group identifiers associated with scheduled communicationswith the base station during a time period, contend, based on the groupidentifier of the UE and the one or more group identifiers received fromthe base station, for access to a set of AUL resources during the timeperiod, and perform, based on the contending, an AUL transmission to thebase station using the set of autonomous uplink resources.

Transmitter 820 may transmit signals generated by other components ofthe device 805. In some examples, the transmitter 820 may be collocatedwith a receiver 810 in a transceiver module. For example, thetransmitter 820 may be an example of aspects of the transceiver 1120described with reference to FIG. 11. The transmitter 820 may utilize asingle antenna or a set of antennas.

FIG. 9 shows a block diagram 900 of a UE 905 that supports group basedscheduled and autonomous uplink coexistence in accordance with aspectsof the present disclosure. UE 905 may be an example of aspects of a UE805 or a UE 115 as described with reference to FIGS. 1 and 805. UE 905may include receiver 910, communications manager 915, and transmitter940. UE 905 may also include a processor. Each of these components maybe in communication with one another (e.g., via one or more buses).

Receiver 910 may receive information such as packets, user data, orcontrol information associated with various information channels (e.g.,control channels, data channels, and information related to group basedscheduled and autonomous uplink coexistence, etc.). Information may bepassed on to other components of the device 905. The receiver 910 may bean example of aspects of the transceiver 1120 described with referenceto FIG. 11. The receiver 910 may utilize a single antenna or a set ofantennas.

Communications manager 915 may be an example of aspects of thecommunications manager 1110 described with reference to FIG. 11.

Communications manager 915 may also include group ID manager 920,scheduled group ID manager 925, contention manager 930, and AUL manager935.

Group ID manager 920 may receive, from a base station, a groupidentifier of the UE.

Scheduled group ID manager 925 may receive, from the base station, anindication of one or more group identifiers associated with scheduledcommunications with the base station during a time period.

Contention manager 930 may contend, based on the group identifier of theUE and the one or more group identifiers received from the base station,for access to a set of AUL resources during the time period.

AUL manager 935 may perform, based on the contending, an AULtransmission to the base station using the set of autonomous uplinkresources.

Transmitter 940 may transmit signals generated by other components ofthe device 905. In some examples, the transmitter 940 may be collocatedwith a receiver 910 in a transceiver module. For example, thetransmitter 940 may be an example of aspects of the transceiver 1120described with reference to FIG. 11. The transmitter 940 may utilize asingle antenna or a set of antennas.

FIG. 10 shows a block diagram 1000 of a communications manager 1005 thatsupports group based scheduled and autonomous uplink coexistence inaccordance with aspects of the present disclosure. The communicationsmanager 1005 may be an example of aspects of a communications manager815, a communications manager 915, or a communications manager 1110described with reference to FIGS. 8, 9, and 11. The communicationsmanager 1005 may include group ID manager 1010, scheduled group IDmanager 1015, contention manager 1020, AUL manager 1025, measurementprocedure manager 1030, and multi-group ID manager 1035. Each of thesemodules may communicate, directly or indirectly, with one another (e.g.,via one or more buses).

Group ID manager 1010 may receive, from a base station 105, a groupidentifier of the UE 115. In some cases, a common DCI, or a MAC CE, or aRRC message, or a combination thereof.

Scheduled group ID manager 1015 may receive, from the base station 105,an indication of one or more group identifiers associated with scheduledcommunications with the base station 105 during a time period. In somecases, the indication of the one or more group identifiers is receivedin a common DCI.

Contention manager 1020 may contend, based on the group identifier ofthe UE 115 and the one or more group identifiers received from the basestation 105, for access to a set of AUL resources during the timeperiod.

AUL manager 1025 may perform, based on the contending, an AULtransmission to the base station using the set of autonomous uplinkresources.

Measurement procedure manager 1030 may perform one or more instances ofa UE-to-UE measurement procedure. Measurement procedure manager 1030 maytransmit a feedback message to the base station 105 based on theUE-to-UE measurement procedure, where the group identifier of the UE 115is based on the feedback message. Measurement procedure manager 1030 maydetermine, during the UE-to-UE measurement procedure, that one or moreneighboring UEs 115 are associated with receive power levels above athreshold value. Measurement procedure manager 1030 may configure thefeedback message to indicate an identifier for the one or moreneighboring UEs 115. Measurement procedure manager 1030 may repeat theUE-to-UE measurement procedure and transmitting the feedback messagebased on: a periodic schedule, or an aperiodic schedule, or a change inreceive power levels for a neighboring UE 115 above a threshold value,or a mobility state of the UE 115, or a combination thereof. In somecases, the UE-to-UE measurement procedure includes an NR CLI procedure.

Multi-group ID manager 1035 may receive a second group identifier thatis associated with a second communication type, where the groupidentifier is associated with a first communication type.

FIG. 11 shows a diagram of a system 1100 including a device 1105 thatsupports group based scheduled and autonomous uplink coexistence inaccordance with aspects of the present disclosure. Device 1105 may be anexample of or include the components of UE 805, UE 905, or a UE 115 asdescribed above, e.g., with reference to FIGS. 8 and 9. Device 1105 mayinclude components for bi-directional voice and data communicationsincluding components for transmitting and receiving communications,including communications manager 1110, I/O controller 1115, transceiver1120, antenna 1125, memory 1130, and processor 1140. These componentsmay be in electronic communication via one or more buses (e.g., bus1145).

I/O controller 1115 may manage input and output signals for device 1105.I/O controller 1115 may also manage peripherals not integrated intodevice 1105. In some cases, I/O controller 1115 may represent a physicalconnection or port to an external peripheral. In some cases, I/Ocontroller 1115 may utilize an operating system such as iOS®, ANDROID®,MS-DOS®, MS-WINDOWS®, OS/2®, UNIX®, LINUX®, or another known operatingsystem. In other cases, I/O controller 1115 may represent or interactwith a modem, a keyboard, a mouse, a touchscreen, or a similar device.In some cases, I/O controller 1115 may be implemented as part of aprocessor. In some cases, a user may interact with device 1105 via I/Ocontroller 1115 or via hardware components controlled by I/O controller1115.

Transceiver 1120 may communicate bi-directionally, via one or moreantennas, wired, or wireless links as described above. For example, thetransceiver 1120 may represent a wireless transceiver and maycommunicate bi-directionally with another wireless transceiver. Thetransceiver 1120 may also include a modem to modulate the packets andprovide the modulated packets to the antennas for transmission, and todemodulate packets received from the antennas.

In some cases, the wireless device 1105 may include a single antenna1125. However, in some cases the device 1105 may have more than oneantenna 1125, which may be capable of concurrently transmitting orreceiving multiple wireless transmissions.

Memory 1130 may include RAM and ROM. The memory 1130 may storecomputer-readable, computer-executable software 1135 includinginstructions that, when executed, cause the processor to perform variousfunctions described herein. In some cases, the memory 1130 may contain,among other things, a BIOS which may control basic hardware or softwareoperation such as the interaction with peripheral components or devices.

Processor 1140 may include an intelligent hardware device, (e.g., ageneral-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, anFPGA, a programmable logic device, a discrete gate or transistor logiccomponent, a discrete hardware component, or any combination thereof).In some cases, processor 1140 may be configured to operate a memoryarray using a memory controller. In other cases, a memory controller maybe integrated into processor 1140. Processor 1140 may be configured toexecute computer-readable instructions stored in a memory to performvarious functions (e.g., functions or tasks supporting group basedscheduled and autonomous uplink coexistence).

FIG. 12 shows a block diagram 1200 of a base station 1205 that supportsgroup based scheduled and autonomous uplink coexistence in accordancewith aspects of the present disclosure. Base station 1205 may be anexample of aspects of a base station 105 as described herein. Basestation 1205 may include receiver 1210, communications manager 1215, andtransmitter 1220. Base station 1205 may also include a processor. Eachof these components may be in communication with one another (e.g., viaone or more buses).

Receiver 1210 may receive information such as packets, user data, orcontrol information associated with various information channels (e.g.,control channels, data channels, and information related to group basedscheduled and autonomous uplink coexistence, etc.). Information may bepassed on to other components of the device 1205. The receiver 1210 maybe an example of aspects of the transceiver 1520 described withreference to FIG. 15. The receiver 1210 may utilize a single antenna ora set of antennas.

Communications manager 1215 may be an example of aspects of thecommunications manager 1510 described with reference to FIG. 15.

Communications manager 1215 and/or at least some of its varioussub-components may be implemented in hardware, software executed by aprocessor, firmware, or any combination thereof. If implemented insoftware executed by a processor, the functions of the communicationsmanager 1215 and/or at least some of its various sub-components may beexecuted by a general-purpose processor, a digital signal processor(DSP), an application-specific integrated circuit (ASIC), afield-programmable gate array (FPGA) or other programmable logic device,discrete gate or transistor logic, discrete hardware components, or anycombination thereof designed to perform the functions described in thepresent disclosure. The communications manager 1215 and/or at least someof its various sub-components may be physically located at variouspositions, including being distributed such that portions of functionsare implemented at different physical locations by one or more physicaldevices. In some examples, communications manager 1215 and/or at leastsome of its various sub-components may be a separate and distinctcomponent in accordance with various aspects of the present disclosure.In other examples, communications manager 1215 and/or at least some ofits various sub-components may be combined with one or more otherhardware components, including but not limited to an input/output (I/O)component, a transceiver, a network server, another computing device,one or more other components described in the present disclosure, or acombination thereof in accordance with various aspects of the presentdisclosure.

Communications manager 1215 may transmit, to a user equipment (UE) 115,a group identifier of the UE 115, transmit an indication of one or moregroup identifiers associated with scheduled communications with the basestation during a time period, where the one or more group identifiersincludes the group identifier of the UE 115, and receive an AULtransmission from the UE 115 over AUL resources during the time periodbased on the indication. The communications manager 1215 may alsodetermine that a downlink communication to a UE 115 is to be performedusing a first transmit beam in a mmW wireless communication system,transmit, using a second transmit beam that has a wider beam width thanthe first transmit beam, a reservation message providing an indicationof the downlink communication, where the indication is conveyed in acommon DCI, and perform the downlink communication to the UE 115 usingthe first transmit beam.

Transmitter 1220 may transmit signals generated by other components ofthe device 1205. In some examples, the transmitter 1220 may becollocated with a receiver 1210 in a transceiver module. For example,the transmitter 1220 may be an example of aspects of the transceiver1520 described with reference to FIG. 15. The transmitter 1220 mayutilize a single antenna or a set of antennas.

FIG. 13 shows a block diagram 1300 of a base station 1305 that supportsgroup based scheduled and autonomous uplink coexistence in accordancewith aspects of the present disclosure. Base station 1305 may be anexample of aspects of a base station 1205 or a base station 105 asdescribed with reference to FIGS. 1 and 1205. Base station 1305 mayinclude receiver 1310, communications manager 1315, and transmitter1340. Base station 1305 may also include a processor. Each of thesecomponents may be in communication with one another (e.g., via one ormore buses).

Receiver 1310 may receive information such as packets, user data, orcontrol information associated with various information channels (e.g.,control channels, data channels, and information related to group basedscheduled and autonomous uplink coexistence, etc.). Information may bepassed on to other components of the device 1305. The receiver 1310 maybe an example of aspects of the transceiver 1520 described withreference to FIG. 15. The receiver 1310 may utilize a single antenna ora set of antennas.

Communications manager 1315 may be an example of aspects of thecommunications manager 1510 described with reference to FIG. 15.

Communications manager 1315 may also include group ID manager 1320,scheduled group ID manager 1325, AUL manager 1330, and mmW downlinkmanager 1335.

Group ID manager 1320 may transmit, to a UE, a group identifier of theUE.

Scheduled group ID manager 1325 may transmit an indication of one ormore group identifiers associated with scheduled communications with thebase station during a time period, where the one or more groupidentifiers includes the group identifier of the UE.

AUL manager 1330 may receive an AUL transmission from the UE over AULresources during the time period based on the indication.

mmW downlink manager 1335 may determine that a downlink communication toa UE is to be performed using a first transmit beam in a mmW wirelesscommunication system. mmW downlink manager 1335 may transmit, using asecond transmit beam that has a wider beam width than the first transmitbeam, a reservation message providing an indication of the downlinkcommunication, where the indication is conveyed in a common DCI. mmWdownlink manager 1335 may perform the downlink communication to the UEusing the first transmit beam.

Transmitter 1340 may transmit signals generated by other components ofthe device 1305. In some examples, the transmitter 1340 may becollocated with a receiver 1310 in a transceiver module. For example,the transmitter 1340 may be an example of aspects of the transceiver1520 described with reference to FIG. 15. The transmitter 1340 mayutilize a single antenna or a set of antennas.

FIG. 14 shows a block diagram 1400 of a communications manager 1405 thatsupports group based scheduled and autonomous uplink coexistence inaccordance with aspects of the present disclosure. The communicationsmanager 1405 may be an example of aspects of a communications manager1215, a communications manager 1315, or a communications manager 1510described with reference to FIGS. 12, 13, and 15. The communicationsmanager 1405 may include group ID manager 1410, scheduled group IDmanager 1415, AUL manager 1420, measurement procedure manager 1425, mmWdownlink manager 1430, and QCL manager 1435. Each of these modules maycommunicate, directly or indirectly, with one another (e.g., via one ormore buses).

Group ID manager 1410 may transmit, to a UE 115, a group identifier ofthe UE 115. In some cases, a common DCI, or a MAC CE, or an RRC message,or a combination thereof.

Scheduled group ID manager 1415 may transmit an indication of one ormore group identifiers associated with scheduled communications with thebase station during a time period, where the one or more groupidentifiers includes the group identifier of the UE 115.

AUL manager 1420 may receive an AUL transmission from the UE 115 overAUL resources during the time period based on the indication.

mmW downlink manager 1430 may determine that a downlink communication toa UE 115 is to be performed using a first transmit beam in a mmWwireless communication system. mmW downlink manager 1430 may transmit,using a second transmit beam that has a wider beam width than the firsttransmit beam, a reservation message providing an indication of thedownlink communication, where the indication is conveyed in a DCI. mmWdownlink manager 1430 may perform the downlink communication to the UEusing the first transmit beam. In some cases, the first transmit beammay be a P1 transmit beam or a P2 transmit beam. In some cases, thefirst transmit beam includes a P3 transmit beam.

Measurement procedure manager 1425 may receive from each UE 115 of a setof UEs 115, an indication of neighboring UEs 115. Measurement proceduremanager 1425 may group the set of UEs 115 into the one or more groups ofUEs 115 based on the neighboring UEs 115. Measurement procedure manager1425 may schedule communications for each of the one or more groups ofUEs 115 according to the grouping. Measurement procedure manager 1425may determine, based on the feedback messages, that one or moreneighboring UEs 115 to a UE 115 are associated with receive power levelsabove a threshold value, where grouping the set of UEs 115 into one ormore groups of UEs 115 includes grouping the UE 115 associated with thefeedback message and the one or more neighboring UEs 115 into a group ofUEs 115. Measurement procedure manager 1425 may repeat the receiving ofthe feedback messages and grouping the set of UEs 115 based on: aperiodic schedule, or an aperiodic schedule, or a change in receivepower levels between neighboring UEs 115 above a threshold value, or amobility state of one or more UEs 115 in the set of UEs 115, or acombination thereof. In some cases, the indication of the neighboringUEs 115 is received in a feedback message that is based on UE-to-UEmeasurement procedures performed between the set of UEs 115. In somecases, the grouping is based on the feedback messages.

QCL manager 1435 may identify one or more neighboring UEs 115 of the UE115 that are configured for AUL communications and QCL the common DCIwith a DCI that the one or more neighboring UEs 115 are configured tomonitor for the AUL communications.

FIG. 15 shows a diagram of a system 1500 including a device 1505 thatsupports group based scheduled and autonomous uplink coexistence inaccordance with aspects of the present disclosure. Device 1505 may be anexample of or include the components of base station 1205, base station1305, or a base station 105 as described above, e.g., with reference toFIGS. 12 and 13. Device 1505 may include components for bi-directionalvoice and data communications including components for transmitting andreceiving communications, including communications manager 1510, networkcommunications manager 1515, transceiver 1520, antenna 1525, memory1530, processor 1540, and inter-station communications manager 1545.These components may be in electronic communication via one or morebuses (e.g., bus 1550).

Network communications manager 1515 may manage communications with thecore network (e.g., via one or more wired backhaul links). For example,the network communications manager 1515 may manage the transfer of datacommunications for client devices, such as one or more UEs 115.

Transceiver 1520 may communicate bi-directionally, via one or moreantennas, wired, or wireless links as described above. For example, thetransceiver 1520 may represent a wireless transceiver and maycommunicate bi-directionally with another wireless transceiver. Thetransceiver 1520 may also include a modem to modulate the packets andprovide the modulated packets to the antennas for transmission, and todemodulate packets received from the antennas.

In some cases, the wireless device 1505 may include a single antenna1525. However, in some cases the device 1505 may have more than oneantenna 1525, which may be capable of concurrently transmitting orreceiving multiple wireless transmissions.

Memory 1530 may include RAM and ROM. The memory 1530 may storecomputer-readable, computer-executable software 1535 includinginstructions that, when executed, cause the processor to perform variousfunctions described herein. In some cases, the memory 1530 may contain,among other things, a BIOS which may control basic hardware or softwareoperation such as the interaction with peripheral components or devices.

Processor 1540 may include an intelligent hardware device, (e.g., ageneral-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, anFPGA, a programmable logic device, a discrete gate or transistor logiccomponent, a discrete hardware component, or any combination thereof).In some cases, processor 1540 may be configured to operate a memoryarray using a memory controller. In other cases, a memory controller maybe integrated into processor 1540. Processor 1540 may be configured toexecute computer-readable instructions stored in a memory to performvarious functions (e.g., functions or tasks supporting group basedscheduled and autonomous uplink coexistence).

Inter-station communications manager 1545 may manage communications withother base station 105, and may include a controller or scheduler forcontrolling communications with UEs 115 in cooperation with other basestations 105. For example, the inter-station communications manager 1545may coordinate scheduling for transmissions to UEs 115 for variousinterference mitigation techniques such as beamforming or jointtransmission. In some examples, inter-station communications manager1545 may provide an X2 interface within an LTE/LTE-A wirelesscommunication network technology to provide communication between basestations 105.

FIG. 16 shows a flowchart illustrating a method 1600 for group basedscheduled and autonomous uplink coexistence in accordance with aspectsof the present disclosure. The operations of method 1600 may beimplemented by a UE 115 or its components as described herein. Forexample, the operations of method 1600 may be performed by acommunications manager as described with reference to FIGS. 8 to 11. Insome examples, a UE 115 may execute a set of codes to control thefunctional elements of the device to perform the functions describedbelow. Additionally or alternatively, the UE 115 may perform aspects ofthe functions described below using special-purpose hardware.

At 1605, the UE 115 may receive, from a base station, a group identifierof the UE 115. The operations of 1605 may be performed according to themethods described herein. In certain examples, aspects of the operationsof 1605 may be performed by a group ID manager as described withreference to FIGS. 8 to 11.

At 1610, the UE 115 may receive, from the base station 105, anindication of one or more group identifiers associated with scheduledcommunications with the base station during a time period. Theoperations of 1610 may be performed according to the methods describedherein. In certain examples, aspects of the operations of 1610 may beperformed by a scheduled group ID manager as described with reference toFIGS. 8 to 11.

At 1615, the UE 115 may contend, based on the group identifier of the UE115 and the one or more group identifiers received from the base station105, for access to a set of AUL resources during the time period. Theoperations of 1615 may be performed according to the methods describedherein. In certain examples, aspects of the operations of 1615 may beperformed by a contention manager as described with reference to FIGS. 8to 11.

At 1620, the UE 115 may perform, based on the contending, an AULtransmission to the base station using the set of autonomous uplinkresources. The operations of 1620 may be performed according to themethods described herein. In certain examples, aspects of the operationsof 1620 may be performed by an AUL manager as described with referenceto FIGS. 8 to 11.

FIG. 17 shows a flowchart illustrating a method 1700 for group basedscheduled and autonomous uplink coexistence in accordance with aspectsof the present disclosure. The operations of method 1700 may beimplemented by a base station or its components as described herein. Forexample, the operations of method 1700 may be performed by acommunications manager as described with reference to FIGS. 12 to 15. Insome examples, a base station may execute a set of codes to control thefunctional elements of the device to perform the functions describedbelow. Additionally or alternatively, the base station may performaspects of the functions described below using special-purpose hardware.

At 1705, the base station 105 may transmit, to a UE 115, a groupidentifier of the UE 115. The operations of 1705 may be performedaccording to the methods described herein. In certain examples, aspectsof the operations of 1705 may be performed by a group ID manager asdescribed with reference to FIGS. 12 to 15.

At 1710, the base station 105 may transmit an indication of one or moregroup identifiers associated with scheduled communications with the basestation 105 during a time period, where the one or more groupidentifiers includes the group identifier of the UE 115. The operationsof 1710 may be performed according to the methods described herein. Incertain examples, aspects of the operations of 1710 may be performed bya scheduled group ID manager as described with reference to FIGS. 12 to15.

At 1715, the base station 105 may receive an AUL transmission from theUE 115 over AUL resources during the time period based on theindication. The operations of 1715 may be performed according to themethods described herein. In certain examples, aspects of the operationsof 1715 may be performed by an AUL manager as described with referenceto FIGS. 12 to 15.

FIG. 18 shows a flowchart illustrating a method 1800 for group basedscheduled and autonomous uplink coexistence in accordance with aspectsof the present disclosure. The operations of method 1800 may beimplemented by a base station or its components as described herein. Forexample, the operations of method 1800 may be performed by acommunications manager as described with reference to FIGS. 12 to 15. Insome examples, a base station may execute a set of codes to control thefunctional elements of the device to perform the functions describedbelow. Additionally or alternatively, the base station may performaspects of the functions described below using special-purpose hardware.

At 1805, the base station 105 may determine that a downlinkcommunication to a UE 115 is to be performed using a first transmit beamin a mmW wireless communication system. The operations of 1805 may beperformed according to the methods described herein. In certainexamples, aspects of the operations of 1805 may be performed by a mmWdownlink manager as described with reference to FIGS. 12 to 15.

At 1810, the base station 105 may transmit, using a second transmit beamthat has a wider beam width than the first transmit beam, a reservationmessage providing an indication of the downlink communication, where theindication is conveyed in a common DCI. The operations of 1810 may beperformed according to the methods described herein. In certainexamples, aspects of the operations of 1810 may be performed by a mmWdownlink manager as described with reference to FIGS. 12 to 15.

At 1815, the base station 105 may perform the downlink communication tothe UE 115 using the first transmit beam. The operations of 1815 may beperformed according to the methods described herein. In certainexamples, aspects of the operations of 1815 may be performed by a mmWdownlink manager as described with reference to FIGS. 12 to 15.

It should be noted that the methods described above describe possibleimplementations, and that the operations and the steps may be rearrangedor otherwise modified and that other implementations are possible.Further, aspects from two or more of the methods may be combined.

Techniques described herein may be used for various wirelesscommunications systems such as code division multiple access (CDMA),time division multiple access (TDMA), frequency division multiple access(FDMA), orthogonal frequency division multiple access (OFDMA), singlecarrier frequency division multiple access (SC-FDMA), and other systems.A CDMA system may implement a radio technology such as CDMA2000,Universal Terrestrial Radio Access (UTRA), etc. CDMA2000 covers IS-2000,IS-95, and IS-856 standards. IS-2000 Releases may be commonly referredto as CDMA2000 1×, 1×, etc. IS-856 (TIA-856) is commonly referred to asCDMA2000 1×EV-DO, High Rate Packet Data (HRPD), etc. UTRA includesWideband CDMA (WCDMA) and other variants of CDMA. A TDMA system mayimplement a radio technology such as Global System for MobileCommunications (GSM).

An OFDMA system may implement a radio technology such as Ultra MobileBroadband (UMB), Evolved UTRA (E-UTRA), Institute of Electrical andElectronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE802.20, Flash-OFDM, etc. UTRA and E-UTRA are part of Universal MobileTelecommunications System (UMTS). LTE, LTE-A, and LTE-A Pro are releasesof UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, LTE-A Pro, NR,and GSM are described in documents from the organization named “3rdGeneration Partnership Project” (3GPP). CDMA2000 and UMB are describedin documents from an organization named “3rd Generation PartnershipProject 2” (3GPP2). The techniques described herein may be used for thesystems and radio technologies mentioned above as well as other systemsand radio technologies. While aspects of an LTE, LTE-A, LTE-A Pro, or NRsystem may be described for purposes of example, and LTE, LTE-A, LTE-APro, or NR terminology may be used in much of the description, thetechniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro,or NR applications.

A macro cell generally covers a relatively large geographic area (e.g.,several kilometers in radius) and may allow unrestricted access by UEs115 with service subscriptions with the network provider. A small cellmay be associated with a lower-powered base station 105, as comparedwith a macro cell, and a small cell may operate in the same or different(e.g., licensed, unlicensed, etc.) frequency bands as macro cells. Smallcells may include pico cells, femto cells, and micro cells according tovarious examples. A pico cell, for example, may cover a small geographicarea and may allow unrestricted access by UEs 115 with servicesubscriptions with the network provider. A femto cell may also cover asmall geographic area (e.g., a home) and may provide restricted accessby UEs 115 having an association with the femto cell (e.g., UEs 115 in aclosed subscriber group (CSG), UEs 115 for users in the home, and thelike). An eNB for a macro cell may be referred to as a macro eNB. An eNBfor a small cell may be referred to as a small cell eNB, a pico eNB, afemto eNB, or a home eNB. An eNB may support one or multiple (e.g., two,three, four, and the like) cells, and may also support communicationsusing one or multiple component carriers.

The wireless communications system 100 or systems described herein maysupport synchronous or asynchronous operation. For synchronousoperation, the base stations 105 may have similar frame timing, andtransmissions from different base stations 105 may be approximatelyaligned in time. For asynchronous operation, the base stations 105 mayhave different frame timing, and transmissions from different basestations 105 may not be aligned in time. The techniques described hereinmay be used for either synchronous or asynchronous operations.

Information and signals described herein may be represented using any ofa variety of different technologies and techniques. For example, data,instructions, commands, information, signals, bits, symbols, and chipsthat may be referenced throughout the above description may berepresented by voltages, currents, electromagnetic waves, magneticfields or particles, optical fields or particles, or any combinationthereof.

The various illustrative blocks and modules described in connection withthe disclosure herein may be implemented or performed with ageneral-purpose processor, a digital signal processor (DSP), anapplication-specific integrated circuit (ASIC), a field-programmablegate array (FPGA) or other programmable logic device (PLD), discretegate or transistor logic, discrete hardware components, or anycombination thereof designed to perform the functions described herein.A general-purpose processor may be a microprocessor, but in thealternative, the processor may be any conventional processor,controller, microcontroller, or state machine. A processor may also beimplemented as a combination of computing devices (e.g., a combinationof a DSP and a microprocessor, multiple microprocessors, one or moremicroprocessors in conjunction with a DSP core, or any other suchconfiguration).

The functions described herein may be implemented in hardware, softwareexecuted by a processor, firmware, or any combination thereof. Ifimplemented in software executed by a processor, the functions may bestored on or transmitted over as one or more instructions or code on acomputer-readable medium. Other examples and implementations are withinthe scope of the disclosure and appended claims. For example, due to thenature of software, functions described above can be implemented usingsoftware executed by a processor, hardware, firmware, hardwiring, orcombinations of any of these. Features implementing functions may alsobe physically located at various positions, including being distributedsuch that portions of functions are implemented at different physicallocations.

Computer-readable media includes both non-transitory computer storagemedia and communication media including any medium that facilitatestransfer of a computer program from one place to another. Anon-transitory storage medium may be any available medium that can beaccessed by a general purpose or special purpose computer. By way ofexample, and not limitation, non-transitory computer-readable media mayinclude random-access memory (RAM), read-only memory (ROM), electricallyerasable programmable read only memory (EEPROM), flash memory, compactdisk (CD) ROM or other optical disk storage, magnetic disk storage orother magnetic storage devices, or any other non-transitory medium thatcan be used to carry or store desired program code means in the form ofinstructions or data structures and that can be accessed by ageneral-purpose or special-purpose computer, or a general-purpose orspecial-purpose processor. Also, any connection is properly termed acomputer-readable medium. For example, if the software is transmittedfrom a website, server, or other remote source using a coaxial cable,fiber optic cable, twisted pair, digital subscriber line (DSL), orwireless technologies such as infrared, radio, and microwave, then thecoaxial cable, fiber optic cable, twisted pair, DSL, or wirelesstechnologies such as infrared, radio, and microwave are included in thedefinition of medium. Disk and disc, as used herein, include CD, laserdisc, optical disc, digital versatile disc (DVD), floppy disk andBlu-ray disc where disks usually reproduce data magnetically, whilediscs reproduce data optically with lasers. Combinations of the aboveare also included within the scope of computer-readable media.

As used herein, including in the claims, “or” as used in a list of items(e.g., a list of items prefaced by a phrase such as “at least one of” or“one or more of”) indicates an inclusive list such that, for example, alist of at least one of A, B, or C means A or B or C or AB or AC or BCor ABC (i.e., A and B and C). Also, as used herein, the phrase “basedon” shall not be construed as a reference to a closed set of conditions.For example, an exemplary step that is described as “based on conditionA” may be based on both a condition A and a condition B withoutdeparting from the scope of the present disclosure. In other words, asused herein, the phrase “based on” shall be construed in the same manneras the phrase “based at least in part on.”

In the appended figures, similar components or features may have thesame reference label. Further, various components of the same type maybe distinguished by following the reference label by a dash and a secondlabel that distinguishes among the similar components. If just the firstreference label is used in the specification, the description isapplicable to any one of the similar components having the same firstreference label irrespective of the second reference label, or othersubsequent reference label.

The description set forth herein, in connection with the appendeddrawings, describes example configurations and does not represent allthe examples that may be implemented or that are within the scope of theclaims. The term “exemplary” used herein means “serving as an example,instance, or illustration,” and not “preferred” or “advantageous overother examples.” The detailed description includes specific details forthe purpose of providing an understanding of the described techniques.These techniques, however, may be practiced without these specificdetails. In some instances, well-known structures and devices are shownin block diagram form in order to avoid obscuring the concepts of thedescribed examples.

The description herein is provided to enable a person skilled in the artto make or use the disclosure. Various modifications to the disclosurewill be readily apparent to those skilled in the art, and the genericprinciples defined herein may be applied to other variations withoutdeparting from the scope of the disclosure. Thus, the disclosure is notlimited to the examples and designs described herein, but is to beaccorded the broadest scope consistent with the principles and novelfeatures disclosed herein.

What is claimed is:
 1. A method for wireless communication at a user equipment (UE), comprising: receiving, from a base station, a first message comprising a first indication of a group identifier of the UE, wherein the group identifier of the UE is based at least in part on a UE-to-UE measurement procedure; receiving, from the base station, a second message comprising a second indication of one or more group identifiers that are scheduled for access to a set of autonomous uplink resources for communications with the base station during a scheduled time period, wherein the second message is different from the first message; determining that the group identifier of the UE is included in the second indication of the one or more group identifiers based at least in part on receiving the second message; contending, based at least in part on determining that the group identifier of the UE is included in the second indication of the one or more group identifiers received from the base station, for access to the set of autonomous uplink resources during the scheduled time period; and performing, based at least in part on the contending, an autonomous uplink transmission to the base station using the set of autonomous uplink resources.
 2. The method of claim 1, further comprising: performing one or more instances of the UE-to-UE measurement procedure; and transmitting a feedback message to the base station based at least in part on the UE-to-UE measurement procedure.
 3. The method of claim 2, further comprising: determining, during the UE-to-UE measurement procedure, that one or more neighboring UEs are associated with receive power levels above a threshold value; and configuring the feedback message to indicate an identifier for the one or more neighboring UEs.
 4. The method of claim 2, further comprising: repeating the UE-to-UE measurement procedure and transmitting the feedback message based at least in part on: a periodic schedule, or an aperiodic schedule, or a change in receive power levels for a neighboring UE above a threshold value, or a mobility state of the UE, or a combination thereof.
 5. The method of claim 2, wherein the UE-to-UE measurement procedure comprises a new radio (NR) cross-link interference (CLI) procedure.
 6. The method of claim 1, wherein the first indication of the group identifier is received in at least one of: a common downlink control indicator (DCI), or a medium access control (MAC) control element (CE), or a radio resource control (RRC) message, or a combination thereof.
 7. The method of claim 1, wherein the second indication of the one or more group identifiers is received in a common downlink control indicator (DCI).
 8. The method of claim 1, further comprising: receiving a second group identifier that is associated with a second communication type, wherein the group identifier is associated with a first communication type.
 9. A method for wireless communication at a base station, comprising: transmitting, to a user equipment (UE), a first message comprising a first indication of a group identifier of the UE, wherein the group identifier of the UE is based at least in part on UE-to-UE measurement procedures; transmitting a second message comprising a second indication of one or more group identifiers that are scheduled for access to autonomous uplink resources for communications with the base station during a scheduled time period, wherein the one or more group identifiers includes the group identifier of the UE and the second message is different from the first message; and receiving an autonomous uplink transmission from the UE over the autonomous uplink resources during the scheduled time period based at least in part on the group identifier of the UE being included in the one or more group identifiers.
 10. The method of claim 9, further comprising: receiving from each UE of a plurality of UEs, an indication of neighboring UEs; grouping the plurality of UEs into one or more groups of UEs based at least in part on the neighboring UEs; and scheduling the communications for each of the one or more groups of UEs according to the grouping.
 11. The method of claim 10, wherein: the indication of the neighboring UEs is received in a feedback message that is based at least in part on the UE-to-UE measurement procedures performed between the plurality of UEs; and the grouping is based at least in part on the feedback message.
 12. The method of claim 11, further comprising: determining, based at least in part on the feedback message, that one or more neighboring UEs to a UE are associated with receive power levels above a threshold value, wherein grouping the plurality of UEs into the one or more groups of UEs comprises grouping the UE associated with the feedback message and the one or more neighboring UEs into a group of UEs.
 13. The method of claim 11, further comprising: repeating the receiving of the feedback message and grouping the plurality of UEs based at least in part on: a periodic schedule, or an aperiodic schedule, or a change in receive power levels between neighboring UEs above a threshold value, or a mobility state of one or more UEs in the plurality of UEs, or a combination thereof.
 14. The method of claim 9, wherein the first indication of the group identifier is transmitted in at least one of: a common downlink control indicator (DCI), or a medium access control (MAC) control element (CE), or a radio resource control (RRC) message, or a combination thereof.
 15. An apparatus for wireless communications, comprising: a processor, memory in electronic communication with the processor; and instructions stored in the memory, wherein the instructions are executable by the processor to: receive, from a base station, a first message comprising a first indication of a group identifier of the UE, wherein the group identifier of the UE is based at least in part on a UE-to-UE measurement procedure; receive, from the base station, a second message comprising a second indication of one or more group identifiers that are scheduled for access to a set of autonomous uplink resources for communications with the base station during a scheduled time period, wherein the second message is different from the first message; determining that the group identifier of the UE is included in the second indication of the one or more group identifiers based at least in part on receiving the second message; contend, based at least in part on determining that the group identifier of the UE is included in the second indication of the one or more group identifiers received from the base station, for access to the set of autonomous uplink resources during the scheduled time period; and perform, based at least in part on the contending, an autonomous uplink transmission to the base station using the set of autonomous uplink resources.
 16. The apparatus of claim 15, wherein the instructions are further executable by the processor to cause the apparatus to: perform one or more instances of the UE-to-UE measurement procedure; and transmit a feedback message to the base station based at least in part on the UE-to-UE measurement procedure, wherein the group identifier of the UE is based at least in part on the feedback message.
 17. The apparatus of claim 16, wherein the instructions are further executable by the processor to cause the apparatus to: determine, during the UE-to-UE measurement procedure, that one or more neighboring UEs are associated with receive power levels above a threshold value; and configure the feedback message to indicate an identifier for the one or more neighboring UEs.
 18. The apparatus of claim 16, wherein the instructions are further executable by the processor to cause the apparatus to: repeat the UE-to-UE measurement procedure and transmitting the feedback message based at least in part on: a periodic schedule, or an aperiodic schedule, or a change in receive power levels for a neighboring UE above a threshold value, or a mobility state of the UE, or a combination thereof.
 19. The apparatus of claim 16, wherein the UE-to-UE measurement procedure comprises a new radio (NR) cross-link interference (CLI) procedure.
 20. The apparatus of claim 15, wherein the first indication of the group identifier is received in at least one of a common downlink control indicator (DCI), or a medium access control (MAC) control element (CE), or a radio resource control (RRC) message, or a combination thereof.
 21. The apparatus of claim 15, wherein the second indication of the one or more group identifiers is received in a common downlink control indicator (DCI).
 22. The apparatus of claim 15, wherein the instructions are further executable by the processor to cause the apparatus to: receive a second group identifier that is associated with a second communication type, wherein the group identifier is associated with a first communication type. 